Annotation of 2006/webapi/XMLHttpRequest/Overview.html, revision 1.352
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29: </style>
1.343 avankest 30: <link href="http://www.w3.org/StyleSheets/TR/W3C-ED" rel="stylesheet">
31: </head>
32: <body>
33: <div class="head">
1.342 avankest 34:
1.343 avankest 35: <!--begin-logo-->
36: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
37: <!--end-logo-->
1.342 avankest 38:
1.343 avankest 39: <h1 class="head" id="the-xmlhttprequest-object">XMLHttpRequest</h1>
40:
1.342 avankest 41:
1.352 ! avankest 42: <h2 class="no-num no-toc" id="w3c-doctype">Editor's Draft 23 August 2011</h2>
1.342 avankest 43:
44: <dl>
1.343 avankest 45: <dt>This Version:</dt>
46: <dd class="dontpublish"><a href="http://dev.w3.org/2006/webapi/XMLHttpRequest/">http://dev.w3.org/2006/webapi/XMLHttpRequest/</a></dd>
47: <dt>Previous Versions:</dt>
48:
49: <dd><a href="http://www.w3.org/TR/2010/CR-XMLHttpRequest-20100803/">http://www.w3.org/TR/2010/CR-XMLHttpRequest-20100803/</a></dd>
50: <dd><a href="http://www.w3.org/TR/2009/WD-XMLHttpRequest-20091119/">http://www.w3.org/TR/2009/WD-XMLHttpRequest-20091119/</a></dd>
51: <dd><a href="http://www.w3.org/TR/2009/WD-XMLHttpRequest-20090820/">http://www.w3.org/TR/2009/WD-XMLHttpRequest-20090820/</a></dd>
52: <dd><a href="http://www.w3.org/TR/2008/WD-XMLHttpRequest-20080415/">http://www.w3.org/TR/2008/WD-XMLHttpRequest-20080415/</a></dd>
53: <dd><a href="http://www.w3.org/TR/2007/WD-XMLHttpRequest-20071026/">http://www.w3.org/TR/2007/WD-XMLHttpRequest-20071026/</a></dd>
54: <dd><a href="http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070618/">http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070618/</a></dd>
55: <dd><a href="http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070227/">http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070227/</a></dd>
56: <dd><a href="http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060927/">http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060927/</a></dd>
57: <dd><a href="http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060619/">http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060619/</a></dd>
58: <dd><a href="http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060405/">http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060405/</a></dd>
59:
60:
1.342 avankest 61:
1.343 avankest 62: <dt>Editor:</dt>
63: <dd><a href="http://annevankesteren.nl/">Anne van Kesteren</a>
64: (<a href="http://www.opera.com/">Opera Software ASA</a>)
65: <<a href="mailto:annevk@opera.com">annevk@opera.com</a>></dd>
66: </dl>
1.342 avankest 67:
68:
1.343 avankest 69: <!--begin-copyright-->
70: <p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a> © 2011 <a href="http://www.w3.org/"><abbr title="World Wide Web Consortium">W3C</abbr></a><sup>®</sup> (<a href="http://www.csail.mit.edu/"><abbr title="Massachusetts Institute of Technology">MIT</abbr></a>, <a href="http://www.ercim.eu/"><abbr title="European Research Consortium for Informatics and Mathematics">ERCIM</abbr></a>, <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>, <a href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a> and <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document use</a> rules apply.</p>
71: <!--end-copyright-->
72: </div>
1.2 avankest 73:
1.342 avankest 74: <hr>
1.2 avankest 75:
1.343 avankest 76: <h2 class="no-num no-toc" id="specabstract">Abstract</h2>
1.25 avankest 77:
1.343 avankest 78:
79:
80: <p>The XMLHttpRequest specification defines an API
81: that provides scripted client functionality for transferring data between
82: a client and a server.</p>
83:
84:
85: <h2 class="no-num no-toc" id="sotd">Status of this Document</h2>
86:
87: <p><em>This section describes the status of this document at the time of its
88: publication. Other documents may supersede this document. A list of current
89: W3C publications and the latest revision of this technical report can be
90: found in the <a href="http://www.w3.org/TR/">W3C technical reports index</a>
91: at http://www.w3.org/TR/.</em></p>
92:
1.352 ! avankest 93: <p>This is the 23 August 2011 Editor's Draft of
1.343 avankest 94: XMLHttpRequest. Please send comments to
95: <a href="mailto:public-webapps@w3.org?subject=[XHR]%20">public-webapps@w3.org</a>
96: (<a href="http://lists.w3.org/Archives/Public/public-webapps/">archived</a>)
97: with <samp>[XHR]</samp> at the start of the subject line.</p>
98:
99:
100: <p>For the last Last Call Working Draft the Working Group has kept a
101: <a href="http://dev.w3.org/2006/webapi/XMLHttpRequest/disposition-of-comments-3">disposition of comments</a>
102: document. A
103: <a href="http://dev.w3.org/cvsweb/2006/webapi/XMLHttpRequest/Overview.src.html">list of changes</a>
104: is available via a Web view of CVS. (Due to the way the document is edited
105: certain commit messages have introduced negligible changes to this
106: document and are in fact only relevant for XMLHttpRequest Level 2.)</p>
107:
108:
109: <p>This document is produced by the
110: <a href="http://www.w3.org/2008/webapps/">Web Applications</a> (WebApps) Working Group.
111: The WebApps Working Group is part of the
112: <a href="http://www.w3.org/2006/rwc/Activity">Rich Web Clients Activity</a>
113: in the W3C <a href="http://www.w3.org/Interaction/">Interaction Domain</a>.</p>
114:
115: <p>This document was produced by a group operating under the
116: <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February 2004
117: W3C Patent Policy</a>. W3C maintains a
118: <a href="http://www.w3.org/2004/01/pp-impl/42538/status" rel="disclosure">public
119: list of any patent disclosures</a> made in connection with the deliverables of
120: the group; that page also includes instructions for disclosing a patent. An
121: individual who has actual knowledge of a patent which the individual believes
122: contains
123: <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential">Essential
124: Claim(s)</a> must disclose the information in accordance with
125: <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section
126: 6 of the W3C Patent Policy</a>.</p>
1.2 avankest 127:
1.296 avankest 128: <p>Publication as a Working Draft does not imply endorsement by the W3C
1.343 avankest 129: Membership. This is a draft document and may be updated, replaced or
130: obsoleted by other documents at any time. It is inappropriate to cite this
131: document as other than work in progress.</p>
1.250 avankest 132:
1.343 avankest 133:
134: <h3 class="no-num no-toc" id="crec">Candidate Recommendation Exit Criteria</h3>
1.273 avankest 135:
136: <p>To exit the Candidate Recommendation (CR) stage the following criteria
1.343 avankest 137: must have been met:</p>
1.273 avankest 138:
139: <ol>
140: <li>There will be at least two interoperable implementations passing all
1.343 avankest 141: test cases in the
142: <a href="http://test.w3.org/webapps/tests/XMLHttpRequest/info.htm">test suite</a>
143: for this specification. An implementation is to be available (i.e. for
144: download), shipping (i.e. not private), and not experimental (i.e.
145: intended for a wide audience). The working group will decide when the
146: test suite is of sufficient quality to test interoperability and will
147: produce implementation reports (hosted together with the test suite).</li>
1.273 avankest 148:
1.296 avankest 149: <li>A minimum of six months of the CR stage will have elapsed. This is to
1.343 avankest 150: ensure that enough time is given for any remaining major errors to be
151: caught. The CR period will be extended if implementations are slow to
152: appear.</li> <!-- XXX need to add date -->
1.287 avankest 153:
1.288 avankest 154: <li>Text, which can be in a separate document, exists that explains the
1.343 avankest 155: security considerations for this specification. This may be done in a
156: generic manner as they are most likely applicable to various APIs. The
157: working group will decide whether the text is of sufficient quality.</li>
1.273 avankest 158: </ol>
1.343 avankest 159:
1.273 avankest 160:
1.205 avankest 161:
1.343 avankest 162: <h2 class="no-num no-toc" id="toc">Table of Contents</h2>
1.205 avankest 163:
1.343 avankest 164:
165: <!--begin-toc-->
166: <ol class="toc">
167: <li><a href="#introduction"><span class="secno">1 </span>Introduction</a></li>
168: <li><a href="#conformance"><span class="secno">2 </span>Conformance</a>
169: <ol class="toc">
170: <li><a href="#dependencies"><span class="secno">2.1 </span>Dependencies</a></li>
171: <li><a href="#extensibility"><span class="secno">2.2 </span>Extensibility</a></ol></li>
172: <li><a href="#terminology"><span class="secno">3 </span>Terminology</a></li>
1.348 avankest 173: <li><a href="#interface-xmlhttprequest"><span class="secno">4 </span>Interface <code title="">XMLHttpRequest</code></a>
1.343 avankest 174: <ol class="toc">
1.348 avankest 175: <li><a href="#origin-and-base-url"><span class="secno">4.1 </span>Origin and base URL</a></li>
176: <li><a href="#task-sources"><span class="secno">4.2 </span>Task sources</a></li>
1.343 avankest 177: <li><a href="#constructors"><span class="secno">4.3 </span>Constructors</a></li>
1.350 avankest 178: <li><a href="#garbage-collection"><span class="secno">4.4 </span>Garbage collection</a></li>
179: <li><a href="#event-handlers"><span class="secno">4.5 </span>Event handlers</a></li>
180: <li><a href="#states"><span class="secno">4.6 </span>States</a></li>
181: <li><a href="#request"><span class="secno">4.7 </span>Request</a>
1.343 avankest 182: <ol class="toc">
1.350 avankest 183: <li><a href="#the-open-method"><span class="secno">4.7.1 </span>The <code title="">open()</code> method</a></li>
184: <li><a href="#the-setrequestheader-method"><span class="secno">4.7.2 </span>The <code title="">setRequestHeader()</code> method</a></li>
185: <li><a href="#the-send-method"><span class="secno">4.7.3 </span>The <code title="">send()</code> method</a></li>
186: <li><a href="#infrastructure-for-the-send-method"><span class="secno">4.7.4 </span>Infrastructure for the <code title="">send()</code> method</a></li>
187: <li><a href="#the-abort-method"><span class="secno">4.7.5 </span>The <code title="">abort()</code> method</a></ol></li>
188: <li><a href="#response"><span class="secno">4.8 </span>Response</a>
1.343 avankest 189: <ol class="toc">
1.350 avankest 190: <li><a href="#the-status-attribute"><span class="secno">4.8.1 </span>The <code title="">status</code> attribute</a></li>
191: <li><a href="#the-statustext-attribute"><span class="secno">4.8.2 </span>The <code title="">statusText</code> attribute</a></li>
192: <li><a href="#the-getresponseheader-method"><span class="secno">4.8.3 </span>The <code title="">getResponseHeader()</code> method</a></li>
193: <li><a href="#the-getallresponseheaders-method"><span class="secno">4.8.4 </span>The <code title="">getAllResponseHeaders()</code> method</a></li>
194: <li><a href="#response-entity-body-0"><span class="secno">4.8.5 </span>Response entity body</a></li>
195: <li><a href="#the-responsetext-attribute"><span class="secno">4.8.6 </span>The <code title="">responseText</code> attribute</a></li>
196: <li><a href="#the-responsexml-attribute"><span class="secno">4.8.7 </span>The <code title="">responseXML</code> attribute</a></ol></ol></li>
1.343 avankest 197: <li><a class="no-num" href="#references">References</a>
198: <ol class="toc">
199: <li><a class="no-num" href="#normative-references">Normative references</a></li>
200: <li><a class="no-num" href="#informative-references">Informative references</a></ol></li>
201: <li><a class="no-num" href="#acknowledgments">Acknowledgments</a></ol>
202: <!--end-toc-->
203:
204:
205:
206: <h2 id="introduction"><span class="secno">1 </span>Introduction</h2>
207:
208: <p><em>This section is non-normative.</em></p>
209:
210: <p>The <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object implements an interface exposed
211: by a scripting engine that allows scripts to perform HTTP client
212: functionality, such as submitting form data or loading data from a
213: server. It is the ECMAScript HTTP API.
214: <a class="informative" href="#refsECMASCRIPT">[ECMASCRIPT]</a>
215:
216: <p>The name of the object is <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> for compatibility
217: with the Web, though each component of this name is potentially
218: misleading. First, the object supports any text based format, including
219: XML. Second, it can be used to make requests over both HTTP and HTTPS
220: (some implementations support protocols in addition to HTTP and HTTPS, but
221: that functionality is not covered by this specification). Finally, it
222: supports "requests" in a broad sense of the term as it pertains to HTTP;
223: namely all activity involved with HTTP requests or responses for the
224: defined HTTP methods.</p>
225:
226: <div class="example">
227: <p>Some simple code to do something with data from an XML document
228: fetched over the network:</p>
1.18 avankest 229:
1.312 avankest 230: <pre><code>function processData(data) {
1.316 avankest 231: // taking care of data
1.18 avankest 232: }
233:
234: function handler() {
1.316 avankest 235: if(this.readyState == this.DONE) {
236: if(this.status == 200 &&
237: this.responseXML != null &&
238: this.responseXML.getElementById('test').textContent) {
1.312 avankest 239: // success!
240: processData(this.responseXML.getElementById('test').textContent);
241: return;
242: }
1.316 avankest 243: // something went wrong
244: processData(null);
1.312 avankest 245: }
1.18 avankest 246: }
247:
248: var client = new XMLHttpRequest();
249: client.onreadystatechange = handler;
1.252 avankest 250: client.open("GET", "unicorn.xml");
1.60 avankest 251: client.send();</code></pre>
1.18 avankest 252:
1.58 avankest 253: <p>If you just want to log a message to the server:</p>
1.18 avankest 254:
1.60 avankest 255: <pre><code>function log(message) {
1.312 avankest 256: var client = new XMLHttpRequest();
257: client.open("POST", "/log");
258: client.setRequestHeader("Content-Type", "text/plain;charset=UTF-8");
259: client.send(message);
1.60 avankest 260: }</code></pre>
1.18 avankest 261:
262: <p>Or if you want to check the status of a document on the server:</p>
263:
1.60 avankest 264: <pre><code>function fetchStatus(address) {
1.312 avankest 265: var client = new XMLHttpRequest();
266: client.onreadystatechange = function() {
267: // in case of network errors this might not give reliable results
1.314 avankest 268: if(this.readyState == this.DONE)
1.312 avankest 269: returnStatus(this.status);
270: }
271: client.open("HEAD", address);
272: client.send();
1.60 avankest 273: }</code></pre>
1.18 avankest 274: </div>
1.2 avankest 275:
1.343 avankest 276:
277:
278:
279: <h2 id="conformance"><span class="secno">2 </span>Conformance</h2>
1.2 avankest 280:
1.29 avankest 281: <p>Everything in this specification is normative except for diagrams,
1.343 avankest 282: examples, notes and sections marked non-normative.</p>
1.2 avankest 283:
1.341 avankest 284: <p>The key words must, must not, should, should not and may in this
1.343 avankest 285: document are to be interpreted as described in RFC 2119.
286: <a href="#refsRFC2119">[RFC2119]</a></p>
1.2 avankest 287:
1.343 avankest 288: <p>This specification defines a single conformance class:</p>
1.2 avankest 289:
290: <dl>
1.343 avankest 291: <dt><dfn id="conforming-user-agent">Conforming user agent</dfn></dt>
1.2 avankest 292:
1.75 avankest 293: <dd>
1.343 avankest 294: <p>A user agent must behave as described in this
295: specification in order to be considered conformant.</p>
1.75 avankest 296:
1.343 avankest 297: <p>User agents may implement algorithms given in
298: this specification in any way desired, so long as the end result is
299: indistinguishable from the result that would be obtained by the
300: specification's algorithms.</p>
1.2 avankest 301:
1.343 avankest 302: <p class="note">This specification uses both the terms "conforming user
303: agent(s)" and "user agent(s)" to refer to this product class.</p>
304: </dd>
1.2 avankest 305: </dl>
306:
1.343 avankest 307: <h3 id="dependencies"><span class="secno">2.1 </span>Dependencies</h3>
1.2 avankest 308:
1.343 avankest 309: <p>This specification relies on several underlying specifications.</p>
1.2 avankest 310:
1.31 avankest 311: <dl>
1.343 avankest 312:
1.341 avankest 313:
1.343 avankest 314: <dt>DOM Core</dt>
315: <dd><p>A <a href="#conforming-user-agent">conforming user agent</a> must
316: support at least the subset of the functionality defined in DOM Core that
317: this specification relies upon, such as various exceptions and
318: <code class="external"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#eventtarget">EventTarget</a></code>. <a href="#refsDOMCORE">[DOMCORE]</a></dd>
319:
320: <dt>File API</dt>
321: <dd><p>A <a href="#conforming-user-agent">conforming user agent</a> must
322: support at least the subset of the functionality defined in File API that
323: this specification relies upon, such as the <code class="external"><a href="http://dev.w3.org/2006/webapi/FileAPI/#blob">Blob</a></code> and
324: <code class="external"><a href="http://dev.w3.org/2006/webapi/FileAPI/#file">File</a></code> interfaces. <a href="#refsFILEAPI">[FILEAPI]</a></p>
325:
326:
327: <dt>HTML</dt>
328: <dd><p>A <a href="#conforming-user-agent">conforming user agent</a> must
329: support at least the subset of the functionality defined in HTML that
330: this specification relies upon, such as the basics of the
1.346 avankest 331: <code class="external"><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/browsers.html#window">Window</a></code> object and serializing a <code class="external"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#document">Document</a></code>
1.343 avankest 332: object. <a href="#refsHTML">[HTML]</a>
333:
334: <dt>HTTP</dt>
335: <dd><p>A <a href="#conforming-user-agent">conforming user agent</a> must
336: support some version of the HTTP protocol. Requirements regarding HTTP
337: are made throughout the specification. <a href="#refsHTTP">[HTTP]</a>
338:
339:
340:
341: <dt>Web IDL</dt>
342: <dd><p>A <a href="#conforming-user-agent">conforming user agent</a> must also
343: be a conforming implementation of the IDL fragments in this
344: specification, as described in the Web IDL specification.
345: <a href="#refsWEBIDL">[WEBIDL]</a>
346:
347: <dt>XML</dt>
348: <dd><p>A <a href="#conforming-user-agent">conforming user agent</a> must be a
349: conforming XML processor that reports violations of namespace
350: well-formedness. <a href="#refsXML">[XML]</a>
351: <a href="#refsXMLNS">[XMLNS]</a>
352: </dl>
1.2 avankest 353:
354:
1.343 avankest 355: <h3 id="extensibility"><span class="secno">2.2 </span>Extensibility</h3>
1.162 avankest 356:
1.343 avankest 357: <p>User agents, Working Groups, and other interested parties are
358: <em>strongly encouraged</em> to discuss extensions on a relevant public
359: forum, preferably
360: <a href="mailto:public-webapps@w3.org">public-webapps@w3.org</a>. If this
361: is for some reason not possible prefix the extension in some way and start
362: the prefix with an uppercase letter. E.g. if company Foo wants to add a
363: private method <code>bar()</code> it could be named <code>FooBar()</code>
364: to prevent clashes with a potential future standardized
365: <code>bar()</code>.</p>
1.162 avankest 366:
1.11 avankest 367:
1.182 avankest 368:
1.343 avankest 369: <h2 id="terminology"><span class="secno">3 </span>Terminology</h2>
1.182 avankest 370:
1.343 avankest 371:
1.304 avankest 372:
1.343 avankest 373: <p>To <dfn id="deflate-a-domstring-into-a-byte-sequence">deflate a DOMString into a byte sequence</dfn> means to create
374: a sequence of bytes such that the <var title="">n</var>th byte of the
375: sequence is equal to the low-order byte of the <var title="">n</var>th
376: code point in the original DOMString.</p>
1.304 avankest 377:
1.343 avankest 378: <p>To <dfn id="inflate-a-byte-sequence-into-a-domstring">inflate a byte sequence into a DOMString</dfn> means to create
379: a DOMString such that the <var title="">n</var>th code point has 0x00 as
380: the high-order byte and the <var title="">n</var>th byte of the byte
381: sequence as the low-order byte.</p>
1.2 avankest 382:
1.332 avankest 383:
1.205 avankest 384:
1.348 avankest 385: <h2 id="interface-xmlhttprequest"><span class="secno">4 </span>Interface <code title="">XMLHttpRequest</code></h2>
1.2 avankest 386:
1.343 avankest 387: <p>The <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object can be used by scripts to issue
388: HTTP requests.</p>
1.2 avankest 389:
1.343 avankest 390: <pre class="idl">[NoInterfaceObject]
391: interface <dfn id="xmlhttprequesteventtarget">XMLHttpRequestEventTarget</dfn> : <a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#eventtarget">EventTarget</a> {
1.230 avankest 392: // for future use
393: };
394:
1.343 avankest 395: [<a href="#dom-xmlhttprequest" title="dom-XMLHttpRequest">Constructor</a>]
396: interface <dfn id="xmlhttprequest">XMLHttpRequest</dfn> : <a href="#xmlhttprequesteventtarget">XMLHttpRequestEventTarget</a> {
1.341 avankest 397: // <a href="#event-handlers">event handler</a>
1.346 avankest 398: attribute <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#function">Function</a> <a href="#handler-xhr-onreadystatechange" title="handler-xhr-onreadystatechange">onreadystatechange</a>;
1.60 avankest 399:
1.208 avankest 400: // <a href="#states">states</a>
1.343 avankest 401: const unsigned short <a href="#dom-xmlhttprequest-unsent" title="dom-XMLHttpRequest-UNSENT">UNSENT</a> = 0;
402: const unsigned short <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> = 1;
1.277 avankest 403: const unsigned short <a href="#dom-xmlhttprequest-headers_received" title="dom-XMLHttpRequest-HEADERS_RECEIVED">HEADERS_RECEIVED</a> = 2;
1.343 avankest 404: const unsigned short <a href="#dom-xmlhttprequest-loading" title="dom-XMLHttpRequest-LOADING">LOADING</a> = 3;
405: const unsigned short <a href="#dom-xmlhttprequest-done" title="dom-XMLHttpRequest-DONE">DONE</a> = 4;
406: readonly attribute unsigned short <a href="#dom-xmlhttprequest-readystate" title="dom-XMLHttpRequest-readyState">readyState</a>;
1.60 avankest 407:
1.207 avankest 408: // <a href="#request">request</a>
1.352 ! avankest 409: void <a href="#dom-xmlhttprequest-open" title="dom-XMLHttpRequest-open">open</a>(DOMString <var>method</var>, optional DOMString <var title="">url</var>, optional boolean <var>async</var>, optional DOMString? <var>user</var>, optional DOMString? <var>password</var>);
1.343 avankest 410: void <a href="#dom-xmlhttprequest-setrequestheader" title="dom-XMLHttpRequest-setRequestHeader">setRequestHeader</a>(DOMString <var>header</var>, DOMString <var>value</var>);
411: void <a href="#dom-xmlhttprequest-send" title="dom-XMLHttpRequest-send">send</a>();
412: void <a href="#dom-xmlhttprequest-send" title="dom-XMLHttpRequest-send">send</a>(<a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#document">Document</a> <var>data</var>);
413: void <a href="#dom-xmlhttprequest-send" title="dom-XMLHttpRequest-send">send</a>([AllowAny] DOMString? <var>data</var>);
414: void <a href="#dom-xmlhttprequest-abort" title="dom-XMLHttpRequest-abort">abort</a>();
1.60 avankest 415:
1.207 avankest 416: // <a href="#response">response</a>
1.343 avankest 417: readonly attribute unsigned short <a href="#dom-xmlhttprequest-status" title="dom-XMLHttpRequest-status">status</a>;
418: readonly attribute DOMString <a href="#dom-xmlhttprequest-statustext" title="dom-XMLHttpRequest-statusText">statusText</a>;
419: DOMString <a href="#dom-xmlhttprequest-getresponseheader" title="dom-XMLHttpRequest-getResponseHeader">getResponseHeader</a>(DOMString <var>header</var>);
420: DOMString <a href="#dom-xmlhttprequest-getallresponseheaders" title="dom-XMLHttpRequest-getAllResponseHeaders">getAllResponseHeaders</a>();
421: readonly attribute DOMString <a href="#dom-xmlhttprequest-responsetext" title="dom-XMLHttpRequest-responseText">responseText</a>;
422: readonly attribute <span>Document</span> <a href="#dom-xmlhttprequest-responsexml" title="dom-XMLHttpRequest-responseXML">responseXML</a>;
1.230 avankest 423: };</pre>
1.2 avankest 424:
1.205 avankest 425:
1.275 avankest 426:
1.348 avankest 427: <h3 id="origin-and-base-url"><span class="secno">4.1 </span>Origin and base URL</h3>
1.342 avankest 428:
1.343 avankest 429: <p>Each <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object has an associated
1.345 avankest 430: <dfn id="xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</dfn> and an
1.343 avankest 431: <dfn id="xmlhttprequest-base-url"><code>XMLHttpRequest</code> base URL</dfn>.
1.275 avankest 432:
1.343 avankest 433: <p>This specification defines their values when the global object is
1.346 avankest 434: represented by the <code class="external"><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/browsers.html#window">Window</a></code> object. When
1.345 avankest 435: the <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object is used in other contexts their
436: values will have to be defined as appropriate for that context. That is
1.343 avankest 437: considered to be out of scope for this specification.</p>
1.207 avankest 438:
1.343 avankest 439: <p>In environments where the global object is represented by the
1.346 avankest 440: <code class="external"><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/browsers.html#window">Window</a></code> object the
1.345 avankest 441: <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object has an associated
1.349 avankest 442: <dfn id="xmlhttprequest-document"><code>XMLHttpRequest</code> document</dfn> which is the
443: <a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-document" title="concept-document">document</a>
444: associated with the <code class="external"><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/browsers.html#window">Window</a></code> object for
445: which the <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> interface object was created.</p>
1.207 avankest 446:
1.343 avankest 447: <p class="note">The
1.349 avankest 448: <a href="#xmlhttprequest-document"><code>XMLHttpRequest</code> document</a> is used to
1.343 avankest 449: determine the <a href="#xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</a> and
450: <a href="#xmlhttprequest-base-url"><code>XMLHttpRequest</code> base URL</a> at a later stage.</p>
1.207 avankest 451:
452:
453:
1.348 avankest 454: <h3 id="task-sources"><span class="secno">4.2 </span>Task sources</h3>
1.205 avankest 455:
1.346 avankest 456: <p>The <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#task-source">task source</a> used by this
1.343 avankest 457: specification is the <dfn id="xmlhttprequest-task-source"><code>XMLHttpRequest</code> task source</dfn>.
1.282 avankest 458:
459:
1.343 avankest 460: <h3 id="constructors"><span class="secno">4.3 </span>Constructors</h3>
1.205 avankest 461:
1.343 avankest 462:
1.125 avankest 463:
1.343 avankest 464: <dl class="domintro">
465: <dt><var title="">client</var> = new <code title="dom-XMLHttpRequest"><a href="#dom-xmlhttprequest">XMLHttpRequest</a></code>()</dt>
466: <dd>Returns a new <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object.</dd>
467:
468: </dl>
1.205 avankest 469:
1.343 avankest 470: <p>When the
471: <dfn id="dom-xmlhttprequest" title="dom-XMLHttpRequest"><code>XMLHttpRequest()</code></dfn>
1.345 avankest 472: constructor is invoked, the user agent must return a new
473: <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object.</p>
1.343 avankest 474:
475:
476:
1.350 avankest 477:
478:
479: <h3 id="garbage-collection"><span class="secno">4.4 </span>Garbage collection</h3>
480:
481: <!-- Based on EventSource and WebSocket. Not sure what I am doing. -->
482:
483: <p>An <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object must not be garbage collected if
484: all of the following is true:
485:
486: <ul>
487: <li><p>Its state is <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> and
488: the <a href="#send-flag"><code>send()</code> flag</a> is set, its state is
489: <a href="#dom-xmlhttprequest-headers_received" title="dom-XMLHttpRequest-HEADERS_RECEIVED">HEADERS_RECEIVED</a>, or
490: its state is <a href="#dom-xmlhttprequest-loading" title="dom-XMLHttpRequest-LOADING">LOADING</a>.
491: <li><p>It has one or more
492: <a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-event-listener" title="concept-event-listener">event listeners</a>
493: registered whose <b>type</b> is
1.351 avankest 494: <code title="event-xhr-readystatechange">readystatechange</code>.
1.350 avankest 495: </ul>
496:
497: <p>If an <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object is garbage collected while its
498: connection is still open, the user agent must cancel any instance of the
499: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/urls.html#fetch">fetch</a> algorithm opened by this object,
500: discarding any <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#concept-task" title="concept-task">tasks</a>
501: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#queue-a-task" title="queue a task">queued</a> for them, and
502: discarding any further data received from the network for them.
503:
504:
505:
506: <h3 id="event-handlers"><span class="secno">4.5 </span>Event handlers</h3>
1.343 avankest 507:
508:
509:
510: <p>The following is the
1.346 avankest 511: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#event-handlers" title="event handlers">event handler</a>
1.345 avankest 512: (and its corresponding
1.346 avankest 513: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#event-handler-event-type">event handler event type</a>) that must be
1.345 avankest 514: supported as attribute by the
1.343 avankest 515: <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object:</p>
1.205 avankest 516:
1.343 avankest 517: <table>
518: <thead>
519: <tr>
1.346 avankest 520: <th><a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#event-handlers" title="event handlers">event handler</a>
521: <th><a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#event-handler-event-type">event handler event type</a>
1.343 avankest 522: <tbody>
523: <tr>
524: <td><dfn id="handler-xhr-onreadystatechange" title="handler-xhr-onreadystatechange"><code>onreadystatechange</code></dfn>
525: <td><code title="event-xhr-readystatechange">readystatechange</code></td>
526: </table>
1.89 avankest 527:
1.112 avankest 528:
1.350 avankest 529: <h3 id="states"><span class="secno">4.6 </span>States</h3>
1.91 avankest 530:
1.343 avankest 531: <dl class="domintro">
532: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-readyState"><a href="#dom-xmlhttprequest-readystate">readyState</a></code></dt>
533: <dd><p>Returns the current state.</dd>
1.205 avankest 534: </dl>
1.116 avankest 535:
1.343 avankest 536: <p>The <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object can be in several states. The
537: <dfn id="dom-xmlhttprequest-readystate" title="dom-XMLHttpRequest-readyState"><code>readyState</code></dfn>
1.345 avankest 538: attribute must return the current state, which must be one of the
539: following values:</p>
1.112 avankest 540:
1.206 avankest 541: <dl>
1.343 avankest 542: <dt><dfn id="dom-xmlhttprequest-unsent" title="dom-XMLHttpRequest-UNSENT"><code>UNSENT</code></dfn>
543: (numeric value 0)</dt>
544: <dd><p>The object has been constructed.</dd>
545:
546: <dt><dfn id="dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED"><code>OPENED</code></dfn>
547: (numeric value 1)</dt>
548: <dd><p>The <code title="dom-XMLHttpRequest-open"><a href="#dom-xmlhttprequest-open">open()</a></code> method has been successfully invoked.
549: During this state request headers can be set using
550: <code title="dom-XMLHttpRequest-setRequestHeader"><a href="#dom-xmlhttprequest-setrequestheader">setRequestHeader()</a></code>
551: and the request can be made using the
552: <code title="dom-XMLHttpRequest-send"><a href="#dom-xmlhttprequest-send">send()</a></code> method.</dd>
553:
554: <dt><dfn id="dom-xmlhttprequest-headers_received" title="dom-XMLHttpRequest-HEADERS_RECEIVED"><code>HEADERS_RECEIVED</code></dfn>
555: (numeric value 2)</dt>
556: <dd><p>All redirects (if any) have been followed and all HTTP headers of
557: the final response have been received. Several response members of the
558: object are now available.</dd>
559:
560: <dt><dfn id="dom-xmlhttprequest-loading" title="dom-XMLHttpRequest-LOADING"><code>LOADING</code></dfn>
561: (numeric value 3)</dt>
562: <dd><p>The <a href="#response-entity-body">response entity body</a> is being received.</dd>
563:
564: <dt><dfn id="dom-xmlhttprequest-done" title="dom-XMLHttpRequest-DONE"><code>DONE</code></dfn>
565: (numeric value 4)</dt>
566: <dd><p>The data transfer has been completed or something went wrong
567: during the transfer (e.g. infinite redirects).</dd>
568: </dl>
1.342 avankest 569:
1.343 avankest 570: <p>The <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> state has an associated
571: <dfn id="send-flag"><code>send()</code> flag</dfn> that indicates whether
572: the <code title="dom-XMLHttpRequest-send"><a href="#dom-xmlhttprequest-send">send()</a></code> method has been
573: invoked. It can be either true or false and has an initial value of
574: false.</p>
575:
576: <p>The <dfn id="error-flag">error flag</dfn> indicates some type of
577: network error or abortion. It is used during the
578: <a href="#dom-xmlhttprequest-done" title="dom-XMLHttpRequest-DONE">DONE</a> state. It can be either
579: true or false and has an initial value of false.</p>
1.342 avankest 580:
581:
1.350 avankest 582: <h3 id="request"><span class="secno">4.7 </span>Request</h3>
1.342 avankest 583:
1.343 avankest 584: <p>The <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object holds the following request
585: metadata variables:</p>
1.342 avankest 586:
1.343 avankest 587: <dl>
588: <dt>The <dfn id="asynchronous-flag">asynchronous flag</dfn></dt>
1.346 avankest 589: <dd>True when <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/urls.html#fetch" title="fetch">fetching</a> is
1.345 avankest 590: done asychronously. False when fetching is done synchronously.</dd>
1.343 avankest 591:
592: <dt>The <dfn id="request-method">request method</dfn></dt>
593: <dd>The HTTP method used in the request.</dd>
594:
595: <dt>The <dfn id="request-url">request URL</dfn></dt>
1.346 avankest 596: <dd>The resolved <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/urls.html#url">URL</a> used in the
1.343 avankest 597: request.</dd>
598:
599: <dt>The <dfn id="request-username">request username</dfn></dt>
600: <dd>The username used in the request or null if there is no
601: username.</dd>
602:
603: <dt>The <dfn id="request-password">request password</dfn></dt>
604: <dd>The password used in the request or null if there is no
605: password.</dd>
1.206 avankest 606:
1.343 avankest 607: <dt>The <dfn id="author-request-headers">author request headers</dfn></dt>
608: <dd>A list consisting of HTTP header name/value pairs to be used in the
609: request.<p></p>
1.206 avankest 610:
1.343 avankest 611: <dt>The <dfn id="request-entity-body">request entity body</dfn></dt>
612: <dd>The <a class="external" href="http://tools.ietf.org/html/rfc2616/#section-7.2">entity body</a> used in the
613: request or null if there is no
614: <a class="external" href="http://tools.ietf.org/html/rfc2616/#section-7.2">entity body</a>.</dd>
1.206 avankest 615:
1.343 avankest 616:
617: </dl>
1.206 avankest 618:
1.343 avankest 619:
1.206 avankest 620:
621:
1.350 avankest 622: <h4 id="the-open-method"><span class="secno">4.7.1 </span>The <code title="">open()</code> method</h4>
1.206 avankest 623:
1.343 avankest 624: <dl class="domintro">
625: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-open"><a href="#dom-xmlhttprequest-open">open(<var title="">method</var>,
626: <var title="">url</var>, <var title="">async</var>, <var title="">user</var>,
627: <var title="">password</var>)</a></code></dt>
1.206 avankest 628:
1.343 avankest 629: <dd>
630: <p>Sets the <a href="#request-method">request method</a>, <a href="#request-url">request URL</a>,
631: <a href="#asynchronous-flag">asynchronous flag</a>, <a href="#request-username">request username</a>, and
632: <a href="#request-password">request password</a>.</p>
1.206 avankest 633:
1.343 avankest 634: <p>Throws a <code class="external" title="dom-DOMException-SYNTAX_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-syntax_err">SYNTAX_ERR</a></code> exception if one of the following is
635: true:</p>
1.112 avankest 636:
1.342 avankest 637: <ul>
1.343 avankest 638: <li><var title="">method</var> is not a valid HTTP method.</li>
639: <li><var title="">url</var> cannot be resolved.</li>
640: <li><var title="">url</var> contains the <code>"user:password"</code>
641: format in the <code class="external"><a href="http://tools.ietf.org/html/rfc2616/#section-3.2.1">userinfo</a></code> production.
1.285 avankest 642: </ul>
643:
1.343 avankest 644: <p>Throws a <code class="external" title="dom-DOMException-SECURITY_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-security_err">SECURITY_ERR</a></code> exception if
645: <var title="">method</var> is a case-insensitive match for
646: <code>CONNECT</code>, <code>TRACE</code> or <code>TRACK</code>.</p>
647:
648: <p>Throws an <code class="external" title="dom-DOMException-INVALID_ACCESS_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception if either
649: <var title="">user</var> or <var title="">password</var> is passed as
1.346 avankest 650: argument and the <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#origin">origin</a> of <var title="">url</var> does not
1.343 avankest 651: match the <a href="#xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</a>.</p>
652: </dd>
1.274 avankest 653: </dl>
654:
1.343 avankest 655: <p>When the
656: <dfn id="dom-xmlhttprequest-open" title="dom-XMLHttpRequest-open"><code>open(<var title="">method</var>, <var title="">url</var>, <var title="">async</var>, <var title="">user</var>, <var title="">password</var>)</code></dfn>
657: method is invoked, the user agent must run these steps
658: (unless otherwise indicated):</p>
1.112 avankest 659:
1.205 avankest 660: <ol>
661: <li>
1.343 avankest 662: <p>If the <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object has an associated
1.349 avankest 663: <a href="#xmlhttprequest-document"><code>XMLHttpRequest</code> document</a> run
1.343 avankest 664: these substeps:</p>
1.112 avankest 665:
1.205 avankest 666: <ol>
1.343 avankest 667: <li><p>If the
1.349 avankest 668: <a href="#xmlhttprequest-document"><code>XMLHttpRequest</code> document</a> is not
1.346 avankest 669: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/browsers.html#fully-active">fully active</a> raise an
1.343 avankest 670: <code class="external" title="dom-DOMException-INVALID_STATE_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code>
671: exception and terminate the overall set of steps.</li>
672:
673: <li><p>Let <a href="#xmlhttprequest-base-url"><code>XMLHttpRequest</code> base URL</a> be the
1.346 avankest 674: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/urls.html#document-base-url">document base URL</a> of the
1.349 avankest 675: <a href="#xmlhttprequest-document"><code>XMLHttpRequest</code> document</a>.</li>
1.343 avankest 676:
677: <li><p>Let <a href="#xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</a> be the
1.346 avankest 678: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#origin">origin</a> of the
1.349 avankest 679: <a href="#xmlhttprequest-document"><code>XMLHttpRequest</code> document</a>.</li>
1.205 avankest 680: </ol>
1.343 avankest 681: </li>
1.342 avankest 682:
1.343 avankest 683: <li><p>If any code point in <var>method</var> is higher than
684: U+00FF LATIN SMALL LETTER Y WITH DIAERESIS or after
685: <a href="#deflate-a-domstring-into-a-byte-sequence" title="deflate a DOMString into a byte sequence">deflating</a>
686: <var>method</var> it does not match the
687: <a class="external" href="http://tools.ietf.org/html/rfc2616/#section-5.1.1">Method</a> token production raise a <code class="external" title="dom-DOMException-SYNTAX_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-syntax_err">SYNTAX_ERR</a></code>
688: exception and terminate these steps. Otherwise let <var>method</var> be
689: the result of
690: <a href="#deflate-a-domstring-into-a-byte-sequence" title="deflate a DOMString into a byte sequence">deflating</a>
691: <var>method</var>.</li> <!-- This sounds lame, but it works. -->
1.91 avankest 692:
693: <li>
1.258 avankest 694: <p>If <var>method</var> is a case-insensitive match for
1.343 avankest 695: <code>CONNECT</code>, <code>DELETE</code>, <code>GET</code>,
696: <code>HEAD</code>, <code>OPTIONS</code>, <code>POST</code>,
697: <code>PUT</code>, <code>TRACE</code>, or <code>TRACK</code>
698: subtract 0x20 from each byte in the range 0x61 (ASCII a) to
699: 0x7A (ASCII z).</p>
1.205 avankest 700:
1.343 avankest 701: <p class="note">If it does not match any of the above, it is passed
702: through <em>literally</em>, including in the final request.</p>
1.205 avankest 703: </li>
704: <!-- WebKit (and supposedly Gecko) also uppercase: COPY, INDEX, LOCK,
705: M-POST, MKCOL, MOVE, PROPFIND, PROPPATCH, and UNLOCK. -->
1.89 avankest 706:
1.205 avankest 707: <li>
1.258 avankest 708: <p>If <var>method</var> is a case-sensitive match for
1.343 avankest 709: <code>CONNECT</code>, <code>TRACE</code>, or <code>TRACK</code> raise a
710: <code class="external" title="dom-DOMException-SECURITY_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-security_err">SECURITY_ERR</a></code> exception and terminate these steps.</p>
1.164 avankest 711:
1.343 avankest 712: <p class="note">Allowing these methods poses a security risk.
713: <a href="#refsHTTPVERBSEC">[HTTPVERBSEC]</a>
714: </li>
715:
716: <li><p>Let <var title="">url</var> be a
1.346 avankest 717: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/urls.html#url">URL</a> with character encoding UTF-8.
1.89 avankest 718:
1.343 avankest 719: <li><p><span title="Resolve a URL">Resolve</span> <var title="">url</var>
720: relative to the <a href="#xmlhttprequest-base-url"><code>XMLHttpRequest</code> base URL</a>.
721: If the algorithm returns an error raise a <code class="external" title="dom-DOMException-SYNTAX_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-syntax_err">SYNTAX_ERR</a></code>
722: exception and terminate these steps.</li>
1.89 avankest 723:
1.205 avankest 724: <!-- Presto and Gecko override the encoding. WebKit does not. Trident
725: does not support non-ASCII URLs. This matters for the <query> component,
1.330 avankest 726: see HTML. -->
1.129 avankest 727:
1.343 avankest 728: <li><p>Drop
1.346 avankest 729: <code class="external" title="url-fragment"><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/urls.html#url-fragment"><fragment></a></code> from
1.343 avankest 730: <var title="">url</var>.</li>
731:
732: <li><p>If the <code>"user:password"</code> format in the
733: <code class="external"><a href="http://tools.ietf.org/html/rfc2616/#section-3.2.1">userinfo</a></code> production is not supported
734: for the relevant
1.346 avankest 735: <code class="external" title="url-scheme"><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/urls.html#url-scheme"><scheme></a></code> and
1.343 avankest 736: <var title="">url</var> contains this format raise a
737: <code class="external" title="dom-DOMException-SYNTAX_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-syntax_err">SYNTAX_ERR</a></code>
738: and terminate these steps.</li>
1.89 avankest 739:
1.314 avankest 740: <!-- XXX need to throw here for "user:password" or just "user" for
741: cross-origin unless we solve this in another way -->
1.2 avankest 742:
1.343 avankest 743: <li><p>If <var title="">url</var> contains the <code>"user:password"</code>
744: format let <var>temp user</var> be the user part and
745: <var>temp password</var> be the password part.</li>
1.2 avankest 746:
1.343 avankest 747: <li><p>If <var title="">url</var> just contains the <code>"user"</code>
748: format let <var>temp user</var> be the user part.</li>
1.2 avankest 749:
1.343 avankest 750: <li><p>Let <var>async</var> be the value of the <var>async</var> argument
751: or true if it was omitted.</li>
1.2 avankest 752:
1.205 avankest 753: <li>
1.343 avankest 754: <p>If the <var title="">user</var> argument was not omitted follow these
755: sub steps:</p>
1.2 avankest 756:
1.60 avankest 757: <ol>
1.343 avankest 758: <li><p>If <var title="">user</var> is not null and the
1.346 avankest 759: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#origin">origin</a> of <var title="">url</var> is not
760: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#same-origin">same origin</a> with the
1.343 avankest 761: <a href="#xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</a> raise an
762: <code class="external" title="dom-DOMException-INVALID_ACCESS_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and terminate the overall set
763: of steps.</li>
1.2 avankest 764:
1.343 avankest 765: <li><p>Let <var>temp user</var> be <var>user</var>.</li>
1.205 avankest 766: </ol>
1.184 avankest 767:
1.343 avankest 768: <p class="note">These steps override anything that may have been set by
769: the <var title="">url</var> argument.</p>
770: </li>
1.157 avankest 771:
1.205 avankest 772: <li>
1.343 avankest 773: <p>If the <var title="">password</var> argument was not omitted follow
774: these sub steps:</p>
1.2 avankest 775:
1.205 avankest 776: <ol>
1.343 avankest 777: <li><p>If <var title="">password</var> is not null and the
1.346 avankest 778: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#origin">origin</a> of <var title="">url</var> is not
779: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#same-origin">same origin</a> with the
1.343 avankest 780: <a href="#xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</a> raise an
781: <code class="external" title="dom-DOMException-INVALID_ACCESS_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_access_err">INVALID_ACCESS_ERR</a></code> exception and terminate the overall set
782: of steps.</li>
1.2 avankest 783:
1.343 avankest 784: <li><p>Let <var>temp password</var> be <var>password</var>.</li>
1.205 avankest 785: </ol>
1.102 avankest 786:
1.343 avankest 787: <p class="note">These steps override anything that may have been set by
788: the <var title="">url</var> argument.</p>
789: </li>
1.2 avankest 790:
1.343 avankest 791: <li><p><a href="#terminate-abort" title="terminate abort()">Terminate the <code>abort()</code> algorithm</a>.</li>
1.319 avankest 792:
1.343 avankest 793: <li><p><a href="#terminate-send" title="terminate send()">Terminate the <code>send()</code> algorithm</a>.</li>
1.2 avankest 794:
1.343 avankest 795: <li><p>The user agent should cancel any network
796: activity for which the object is responsible.</li>
1.205 avankest 797: <!-- we can hardly require it... -->
1.24 avankest 798:
1.343 avankest 799: <li><p>If there are any
1.346 avankest 800: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#concept-task" title="concept-task">tasks</a> from the
1.343 avankest 801: object's <a href="#xmlhttprequest-task-source"><code>XMLHttpRequest</code> task source</a> in one of
1.346 avankest 802: the <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#task-queue" title="task queue">task queues</a>,
1.343 avankest 803: then remove them.
1.254 avankest 804:
805: <li>
1.205 avankest 806: <p>Set variables associated with the object as follows:</p>
1.70 avankest 807:
1.205 avankest 808: <ul>
1.17 avankest 809:
1.343 avankest 810: <li><p>Set the <a href="#request-method">request method</a> to <var>method</var>.</li>
811:
812: <li><p>Set the <a href="#request-url">request URL</a> to <var title="">url</var>.</li>
813:
814: <li><p>Set the <a href="#asynchronous-flag">asynchronous flag</a> to the value of
815: <var>async</var>.</li>
1.341 avankest 816:
1.343 avankest 817: <li><p>Set the <a href="#request-username">request username</a> to <var>temp user</var>.</li>
1.341 avankest 818:
1.343 avankest 819: <li><p>Set the <a href="#request-password">request password</a> to <var>temp password</var>.</li>
1.17 avankest 820:
1.343 avankest 821: <li><p>Empty the list of <a href="#author-request-headers">author request headers</a>.</p>
1.308 avankest 822:
1.343 avankest 823:
1.17 avankest 824:
1.343 avankest 825: <li><p>Set the <a href="#send-flag"><code>send()</code> flag</a> to false.</li>
1.17 avankest 826:
1.343 avankest 827: <li><p>Set <a href="#response-entity-body">response entity body</a> to null.</li>
1.205 avankest 828: </ul>
1.343 avankest 829: </li>
1.44 avankest 830:
1.343 avankest 831: <li><p>Switch the state to
832: <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a>.</li>
1.176 avankest 833:
1.343 avankest 834: <li><p><a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-event-fire" title="concept-event-fire">Fire an event</a> named <code title="event-xhr-readystatechange">readystatechange</code>.</li>
1.205 avankest 835: </ol>
1.22 avankest 836:
1.275 avankest 837:
1.343 avankest 838:
1.350 avankest 839: <h4 id="the-setrequestheader-method"><span class="secno">4.7.2 </span>The <code title="">setRequestHeader()</code> method</h4>
1.343 avankest 840:
841: <dl class="domintro">
842: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-setRequestHeader"><a href="#dom-xmlhttprequest-setrequestheader">setRequestHeader(<var title="">header</var>, <var title="">value</var>)</a></code></dt>
1.275 avankest 843:
844: <dd>
1.343 avankest 845: <p>Appends an header to the list of
846: <a href="#author-request-headers">author request headers</a>, or if <var>header</var> is already
847: in the list of <a href="#author-request-headers">author request headers</a>, combines its value
848: with <var>value</var>.</p>
849:
850: <p>Throws an <code class="external" title="dom-DOMException-INVALID_STATE_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception if the state is
851: not <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> or if the
852: <a href="#send-flag"><code>send()</code> flag</a> is true.</p>
853:
854: <p>Throws a <code class="external" title="dom-DOMException-SYNTAX_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-syntax_err">SYNTAX_ERR</a></code> exception if
855: <var title="">header</var> is not a valid HTTP header field name or if
856: <var title="">value</var> is not a valid HTTP header field value.</p>
857: </dd>
1.275 avankest 858: </dl>
1.205 avankest 859:
1.343 avankest 860: <p class="note">As indicated in the algorithm below certain headers cannot
861: be set and are left up to the user agent. In addition there are certain
862: other headers the user agent will take control of if they are not set by
863: the author as indicated at the end of the
864: <code title="dom-XMLHttpRequest-send"><a href="#dom-xmlhttprequest-send">send()</a></code> method section.</p>
865:
866:
867:
868: <p>When the
869: <dfn id="dom-xmlhttprequest-setrequestheader" title="dom-XMLHttpRequest-setRequestHeader"><code>setRequestHeader(<var title="">header</var>, <var title="">value</var>)</code></dfn>
870: method is invoked, the user agent must run these
871: steps:</p>
1.6 avankest 872:
1.205 avankest 873: <ol>
1.343 avankest 874: <li><p>If the state is not <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> raise
875: an <code class="external" title="dom-DOMException-INVALID_STATE_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and terminate these
876: steps.</li>
877:
878: <li><p>If the <a href="#send-flag"><code>send()</code> flag</a> is true raise an
879: <code class="external" title="dom-DOMException-INVALID_STATE_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and terminate these
880: steps.</li>
881:
882: <li><p>If any code point in <var>header</var> is higher than
883: U+00FF LATIN SMALL LETTER Y WITH DIAERESIS or after
884: <a href="#deflate-a-domstring-into-a-byte-sequence" title="deflate a DOMString into a byte sequence">deflating</a>
885: <var>header</var> it does not match the
886: <a class="external" href="http://tools.ietf.org/html/rfc2616/#section-4.2">field-name</a> production raise a
887: <code class="external" title="dom-DOMException-SYNTAX_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-syntax_err">SYNTAX_ERR</a></code>
888: exception and terminate these steps. Otherwise let <var>header</var> be
889: the result of
890: <a href="#deflate-a-domstring-into-a-byte-sequence" title="deflate a DOMString into a byte sequence">deflating</a>
891: <var>header</var>.</li> <!-- This sounds lame, but it works. -->
892:
893: <li>
894: <p>If any code point in <var>value</var> is higher than
895: U+00FF LATIN SMALL LETTER Y WITH DIAERESIS or after
896: <a href="#deflate-a-domstring-into-a-byte-sequence" title="deflate a DOMString into a byte sequence">deflating</a>
897: <var>value</var> it does not match the
898: <a class="external" href="http://tools.ietf.org/html/rfc2616/#section-4.2">field-value</a> production raise a
899: <code class="external" title="dom-DOMException-SYNTAX_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-syntax_err">SYNTAX_ERR</a></code>
900: exception and terminate these steps. Otherwise let <var>value</var> be
901: the result of
902: <a href="#deflate-a-domstring-into-a-byte-sequence" title="deflate a DOMString into a byte sequence">deflating</a>
903: <var>value</var>.</p> <!-- This sounds lame, but it works. -->
1.47 avankest 904:
1.343 avankest 905: <p class="note">The empty string is legal and represents the empty
906: header value.</p>
1.258 avankest 907: </li>
1.6 avankest 908:
1.205 avankest 909: <li>
1.343 avankest 910: <p>Terminate these steps if <var>header</var> is a case-insensitive
911: match for one of the following headers:</p>
1.179 avankest 912:
1.205 avankest 913: <ul>
1.343 avankest 914: <li><code>Accept-Charset</code></li>
915: <li><code>Accept-Encoding</code></li>
916: <li><code>Connection</code></li>
917: <li><code>Content-Length</code></li>
918: <li><code>Cookie</code></li>
919: <li><code>Cookie2</code></li>
920: <li><code>Content-Transfer-Encoding</code></li>
921: <li><code>Date</code></li>
922: <li><code>Expect</code></li>
923: <li><code>Host</code></li>
924: <li><code>Keep-Alive</code></li>
925: <li><code>Referer</code></li>
926: <li><code>TE</code></li>
927: <li><code>Trailer</code></li>
928: <li><code>Transfer-Encoding</code></li>
929: <li><code>Upgrade</code></li>
930: <li><code>User-Agent</code></li>
931: <li><code>Via</code></li>
1.205 avankest 932: </ul>
1.69 avankest 933:
1.258 avankest 934: <p>… or if the start of <var>header</var> is a case-insensitive
1.343 avankest 935: match for <code>Proxy-</code> or <code>Sec-</code> (including when
936: <var>header</var> is just <code>Proxy-</code> or <code>Sec-</code>).</p>
1.342 avankest 937:
1.343 avankest 938: <p class="note">The above headers are controlled by the user agent to
939: let it control those aspects of transport. This guarantees data
940: integrity to some extent. Header names starting with <code>Sec-</code>
941: are not allowed to be set to allow new headers to be minted that are
942: guaranteed not to come from <code><a href="#xmlhttprequest">XMLHttpRequest</a></code>.</p>
943: </li>
1.205 avankest 944:
1.343 avankest 945: <li><p>If <var>header</var> is not in the
946: <a href="#author-request-headers">author request headers</a> list append <var>header</var> with
947: its associated <var>value</var> to the list and terminate these
948: steps.</li>
949:
950: <li><p>If <var>header</var> is in the <a href="#author-request-headers">author request headers</a>
951: list either use multiple headers, combine the values or use a combination
952: of those (section 4.2, RFC 2616).
953: <a href="#refsHTTP">[HTTP]</a>
954: <!-- XXX it seems UAs always combine the values -->
1.205 avankest 955: </ol>
1.18 avankest 956:
1.343 avankest 957: <p class="note">See also the
958: <code title="dom-XMLHttpRequest-send"><a href="#dom-xmlhttprequest-send">send()</a></code> method regarding user
959: agent header handling for caching, authentication, proxies, and
960: cookies.</p>
1.47 avankest 961:
1.343 avankest 962: <div class="example">
1.316 avankest 963: <p>Some simple code demonstrating what happens when setting the same
1.343 avankest 964: header twice:</p>
1.316 avankest 965:
1.205 avankest 966: <pre><code>// The following script:
1.18 avankest 967: var client = new XMLHttpRequest();
968: client.open('GET', 'demo.cgi');
969: client.setRequestHeader('X-Test', 'one');
970: client.setRequestHeader('X-Test', 'two');
971: client.send();
972:
1.316 avankest 973: // …results in the following header being sent:
974: X-Test: one, two</code></pre>
1.205 avankest 975: </div>
1.6 avankest 976:
1.343 avankest 977:
1.341 avankest 978:
1.276 avankest 979:
1.350 avankest 980: <h4 id="the-send-method"><span class="secno">4.7.3 </span>The <code title="">send()</code> method</h4>
1.343 avankest 981:
982: <dl class="domintro">
983: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-send"><a href="#dom-xmlhttprequest-send">send(<var title="">data</var>)</a></code></dt>
1.276 avankest 984: <dd>
1.343 avankest 985: <p>Initiates the request. The optional argument provides the
986: <a href="#request-entity-body">request entity body</a>. The argument is ignored if
987: <a href="#request-method">request method</a> is <code>GET</code> or
988: <code>HEAD</code>.</p>
989:
990: <p>Throws an <code class="external" title="dom-DOMException-INVALID_STATE_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception if the state is
991: not <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> or if the
992: <a href="#send-flag"><code>send()</code> flag</a> is true.</p>
993: </dd>
1.276 avankest 994: </dl>
1.205 avankest 995:
1.343 avankest 996: <p>When the
997: <dfn id="dom-xmlhttprequest-send" title="dom-XMLHttpRequest-send"><code>send(<var>data</var>)</code></dfn>
998: method is invoked, the user agent must run these steps
999: (unless otherwise noted). This algorithm can be
1000: <dfn id="terminate-send" title="terminate send()">terminated</dfn> by invoking the
1001: <code title="dom-XMLHttpRequest-open"><a href="#dom-xmlhttprequest-open">open()</a></code> or
1002: <code title="dom-XMLHttpRequest-abort"><a href="#dom-xmlhttprequest-abort">abort()</a></code> method. When it is
1003: <a href="#terminate-send" title="terminate send()">terminated</a> the user agent
1004: must terminate the algorithm after finishing the step
1005: it is on.</p>
1006:
1007: <p class="note">The <code title="dom-XMLHttpRequest-send"><a href="#dom-xmlhttprequest-send">send()</a></code>
1008: algorithm can only be terminated when the <a href="#asynchronous-flag">asynchronous flag</a>
1009: is true and only after the method call has returned.</p>
1.60 avankest 1010:
1.205 avankest 1011: <ol>
1.343 avankest 1012: <li><p>If the state is not <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> raise
1013: an <code class="external" title="dom-DOMException-INVALID_STATE_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and terminate these
1014: steps.</li>
1015:
1016: <li><p>If the <a href="#send-flag"><code>send()</code> flag</a> is true raise an
1017: <code class="external" title="dom-DOMException-INVALID_STATE_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code> exception and terminate these
1018: steps.</li>
1019:
1020: <li>
1021: <p>If the <a href="#request-method">request method</a> is a case-sensitive match for
1022: <code>GET</code> or <code>HEAD</code> act as if <var title="">data</var>
1023: is null.</p>
1024:
1025: <p>If the <var>data</var> argument has been omitted or is
1026: null, do not include a <a href="#request-entity-body">request entity body</a>
1027: and go to the next step.</p>
1.342 avankest 1028:
1.343 avankest 1029: <p>Otherwise, let <var>encoding</var> be null, <var>mime type</var> be
1030: null, and then follow these rules:</p>
1.342 avankest 1031:
1.343 avankest 1032: <dl class="switch">
1033:
1.60 avankest 1034:
1.343 avankest 1035: <dt>If <var>data</var> is a <code class="external"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#document">Document</a></code>
1.205 avankest 1036:
1037: <dd>
1.343 avankest 1038: <p>Let <var>encoding</var> be the
1039: <a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#preferred-mime-name">preferred MIME name</a> of the
1040: <a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-document-character-encoding" title="concept-document-character-encoding">character encoding</a>
1041: of <var>data</var>. If <var>encoding</var> is UTF-16 change it to
1042: UTF-8.</p>
1.234 avankest 1043:
1.307 avankest 1044: <p>Let <var>mime type</var> be "<code>application/xml</code>" or
1.343 avankest 1045: "<code>text/html</code>" if
1.349 avankest 1046: <code class="external"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#document">Document</a></code> is an
1.343 avankest 1047: <a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#html-document">HTML document</a>, followed by
1048: "<code>;charset=</code>", followed by <var>encoding</var>.</p>
1049:
1050: <p>Let the <a href="#request-entity-body">request entity body</a> be the result of getting
1.346 avankest 1051: the <code class="external" title="dom-innerHTML"><a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/content-models.html#dom-innerhtml">innerHTML</a></code>
1.343 avankest 1052: attribute on <var>data</var>
1053: <a class="external" href="http://dev.w3.org/2006/webapi/WebIDL/#dfn-obtain-unicode" title="convert a DOMString to a sequence of Unicode characters">converted to Unicode</a>
1054: and encoded as <var>encoding</var>. Re-raise any exception this
1055: raises.</p>
1056:
1057: <p class="note">In particular, if the document cannot be serialized an
1058: <code class="external" title="dom-DOMException-INVALID_STATE_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-invalid_state_err">INVALID_STATE_ERR</a></code>
1059: exception is raised.</p>
1060:
1061: <p class="note">Subsequent changes to the
1062: <code class="external"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#document">Document</a></code> have no effect on what
1063: is transferred.</p>
1064: </dd>
1.239 avankest 1065:
1.343 avankest 1066: <dt>If <var>data</var> is a <code>DOMString</code></dt>
1.239 avankest 1067:
1068: <dd>
1.250 avankest 1069: <p>Let <var>encoding</var> be UTF-8.</p>
1070:
1071: <p>Let <var>mime type</var> be "<code>text/plain;charset=UTF-8</code>".</p>
1072:
1.343 avankest 1073: <p>Let the <a href="#request-entity-body">request entity body</a> be <var>data</var>
1074: <a class="external" href="http://dev.w3.org/2006/webapi/WebIDL/#dfn-obtain-unicode" title="convert a DOMString to a sequence of Unicode characters">converted to Unicode</a>
1075: and encoded as UTF-8.</p>
1076: </dd>
1077:
1078:
1.205 avankest 1079: </dl>
1.103 avankest 1080:
1.343 avankest 1081: <p>If a <code>Content-Type</code> header is set using
1082: <code title="dom-XMLHttpRequest-setRequestHeader"><a href="#dom-xmlhttprequest-setrequestheader">setRequestHeader()</a></code>
1.346 avankest 1083: whose value is a <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/infrastructure.html#valid-mime-type">valid MIME type</a> and
1.343 avankest 1084: has a <code>charset</code> parameter whose value is not a case-insensitive
1085: match for <var title="">encoding</var>, and <var title="">encoding</var>
1086: is not null, set all the <code>charset</code> parameters of the
1087: <code>Content-Type</code> header to <var title="">encoding</var>.</p>
1088:
1089: <p>If no <code>Content-Type</code> header has been set using
1090: <code title="dom-XMLHttpRequest-setRequestHeader"><a href="#dom-xmlhttprequest-setrequestheader">setRequestHeader()</a></code>
1091: and <var title="">mime type</var> is not null set a
1092: <code>Content-Type</code> request header with as value
1093: <var title="">mime type</var>.</p>
1094:
1.238 avankest 1095: <!-- reminder: if we ever change this to always include charset it has
1096: to be included as the first parameter for compatibility reasons -->
1.343 avankest 1097: </li>
1098:
1099: <li><p>If the <a href="#asynchronous-flag">asynchronous flag</a> is false release the
1.346 avankest 1100: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#storage-mutex">storage mutex</a>.</li>
1.343 avankest 1101:
1102:
1.341 avankest 1103:
1.343 avankest 1104: <li><p>Set the <a href="#error-flag">error flag</a> to false.</li>
1.341 avankest 1105:
1.343 avankest 1106:
1.164 avankest 1107:
1.205 avankest 1108: <li>
1.343 avankest 1109: <p>If the <a href="#asynchronous-flag">asynchronous flag</a> is true run these substeps:</p>
1.213 avankest 1110:
1111: <ol>
1.343 avankest 1112: <li><p>Set the <a href="#send-flag"><code>send()</code> flag</a> to true.</li>
1113:
1.342 avankest 1114: <li>
1.343 avankest 1115: <p><a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-event-fire" title="concept-event-fire">Fire an event</a> named <code title="event-xhr-readystatechange">readystatechange</code>.
1.341 avankest 1116:
1.343 avankest 1117: <p class="note">The state does not change. The event is dispatched for
1118: historical reasons.</p>
1119: </li>
1.219 avankest 1120:
1.343 avankest 1121:
1.213 avankest 1122:
1.343 avankest 1123: <li><p>Return the <code title="dom-XMLHttpRequest-send"><a href="#dom-xmlhttprequest-send">send()</a></code>
1124: method call, but continue running the steps in this algorithm.</li>
1.213 avankest 1125: </ol>
1.343 avankest 1126: </li>
1.213 avankest 1127:
1128: <li>
1.343 avankest 1129: <dl class="switch">
1130: <dt>If the <a href="#xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</a> and the
1.346 avankest 1131: <a href="#request-url">request URL</a> are <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#same-origin">same origin</a></dt>
1.195 avankest 1132:
1.205 avankest 1133: <dd>
1.343 avankest 1134: <p>These are the <dfn id="same-origin-request-steps">same-origin request steps</dfn>.</p>
1.342 avankest 1135:
1.346 avankest 1136: <p><a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/urls.html#fetch">Fetch</a> the
1.343 avankest 1137: <a href="#request-url">request URL</a> from <i title="">origin</i>
1138: <a href="#xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</a>, with the
1139: <i title="">synchronous flag</i> set if the
1140: <a href="#asynchronous-flag">asynchronous flag</a> is false, using HTTP method
1141: <a href="#request-method">request method</a>, user <a href="#request-username">request username</a> (if
1142: non-null) and password <a href="#request-password">request password</a> (if non-null),
1143: taking into account the <a href="#request-entity-body">request entity body</a>, list of
1144: <a href="#author-request-headers">author request headers</a> and the rules listed at the end of
1145: this section.</p>
1.305 avankest 1146:
1.343 avankest 1147: <dl class="switch">
1148: <dt>If the <a href="#asynchronous-flag">asynchronous flag</a> is false</dt>
1149: <dd>
1150: <p>While making the request also follow the
1151: <a href="#same-origin-request-event-rules">same-origin request event rules</a>.</p>
1.305 avankest 1152:
1153: <!--
1.250 avankest 1154: This cannot involve any task queue whatsoever because that would
1155: mean other tasks on the task queue might get processed as well
1156: which is counter to the whole idea of doing things synchronous.
1157: -->
1.305 avankest 1158:
1.343 avankest 1159: <p class="note">The
1160: <code title="dom-XMLHttpRequest-send"><a href="#dom-xmlhttprequest-send">send()</a></code> method call will
1161: now be returned by virtue of this algorithm ending.</p>
1162: </dd>
1.305 avankest 1163:
1.343 avankest 1164: <dt>If the <a href="#asynchronous-flag">asynchronous flag</a> is true</dt>
1.305 avankest 1165: <dd>
1.343 avankest 1166:
1167:
1.305 avankest 1168: <p>While processing the request, as data becomes available and when
1.343 avankest 1169: the user interferes with the request,
1.346 avankest 1170: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#queue-a-task" title="queue a task">queue tasks</a>
1.343 avankest 1171: to update the <a href="#response-entity-body">response entity body</a> and follow the
1172: <a href="#same-origin-request-event-rules">same-origin request event rules</a>.</p>
1173: </dd>
1.305 avankest 1174: </dl>
1.343 avankest 1175: </dd>
1.205 avankest 1176:
1.343 avankest 1177: <dt>Otherwise</dt>
1.205 avankest 1178: <dd>
1.343 avankest 1179: <p>These are the <dfn id="cross-origin-request-steps">cross-origin request steps</dfn>.</p>
1.250 avankest 1180:
1.343 avankest 1181:
1.305 avankest 1182: <p>This is a <a href="#network-error">network error</a>.</p>
1.343 avankest 1183:
1184:
1185:
1186: </dd>
1.205 avankest 1187: </dl>
1.343 avankest 1188: </li>
1.205 avankest 1189: </ol>
1.124 avankest 1190:
1.205 avankest 1191: <hr>
1192:
1.343 avankest 1193: <p>If the user agent allows the end user to configure a proxy it
1194: should modify the request appropriately; i.e., connect
1195: to the proxy host instead of the origin server, modify the
1196: <code>Request-Line</code> and send <code>Proxy-Authorization</code>
1197: headers as specified.</p>
1.214 avankest 1198:
1.264 avankest 1199: <hr>
1200:
1.343 avankest 1201: <p>If the user agent supports HTTP Authentication and
1202: <code title="http-authorization">Authorization</code> is not in the list
1203: of <a href="#author-request-headers">author request headers</a>, it should
1204: consider requests originating from the <code><a href="#xmlhttprequest">XMLHttpRequest</a></code> object
1205: to be part of the protection space that includes the accessed URIs and
1206: send <code title="http-authorization">Authorization</code> headers and
1207: handle <code>401 Unauthorized</code> requests appropriately.</p>
1208:
1209: <p>If authentication fails,
1210: <a href="#xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</a> and the
1.346 avankest 1211: <a href="#request-url">request URL</a> are <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#same-origin">same origin</a>,
1.343 avankest 1212: <code title="http-authorization">Authorization</code> is not in the list
1213: of <a href="#author-request-headers">author request headers</a>, <a href="#request-username">request username</a> is
1214: null, and <a href="#request-password">request password</a> is null, user agents
1215: should prompt the end user for their username and
1216: password.</p>
1217:
1218: <p>Otherwise, if authentication fails, user agents
1219: must not prompt the end user for their username and
1220: password. <a href="#refsHTTPAUTH">[HTTPAUTH]</a>
1.315 avankest 1221:
1.343 avankest 1222: <p class="note">End users are not prompted for various cases so that
1223: authors can implement their own user interface.</p>
1.214 avankest 1224:
1.264 avankest 1225: <hr>
1226:
1.343 avankest 1227: <p>If the user agent supports HTTP State Management it
1228: should persist, discard and send cookies (as received
1229: in the <code>Set-Cookie</code> response header, and sent in the
1230: <code>Cookie</code> header) as applicable.
1231: <a href="#refsCOOKIES">[COOKIES]</a>
1.214 avankest 1232:
1.264 avankest 1233: <hr>
1234:
1.343 avankest 1235: <p>If the user agent implements a HTTP cache it should
1236: respect <code>Cache-Control</code> request headers set by the
1237: <code title="dom-XMLHttpRequest-setRequestHeader"><a href="#dom-xmlhttprequest-setrequestheader">setRequestHeader()</a></code>
1238: (e.g., <code>Cache-Control: no-cache</code> bypasses the cache). It
1239: must not send <code>Cache-Control</code> or
1240: <code>Pragma</code> request headers automatically unless the end user
1241: explicitly requests such behavior (e.g. by reloading the page).</p>
1242:
1243: <p>For <code>304 Not Modified</code> responses that are a result of a
1244: user agent generated conditional request the user agent
1245: must act as if the server gave a <code>200 OK</code>
1246: response with the appropriate content. The user agent
1247: must allow
1248: <code title="dom-XMLHttpRequest-setRequestHeader"><a href="#dom-xmlhttprequest-setrequestheader">setRequestHeader()</a></code>
1249: to override automatic cache validation by setting request headers (e.g.
1250: <code>If-None-Match</code> or <code>If-Modified-Since</code>), in which
1251: case <code>304 Not Modified</code> responses must be
1252: passed through. <a href="#refsHTTP">[HTTP]</a>
1.214 avankest 1253:
1.264 avankest 1254: <hr>
1255:
1.343 avankest 1256: <p>If the user agent implements server-driven content-negotiation
1257: it must follow these constraints for the
1258: <code>Accept</code> and <code>Accept-Language</code> request headers:</p>
1.233 avankest 1259:
1260: <ul>
1.343 avankest 1261: <li><p>Both headers must not be modified if they are
1262: already set through
1263: <code title="dom-XMLHttpRequest-setRequestHeader"><a href="#dom-xmlhttprequest-setrequestheader">setRequestHeader()</a></code>.</li>
1264:
1265: <li><p>If not set through
1266: <code title="dom-XMLHttpRequest-setRequestHeader"><a href="#dom-xmlhttprequest-setrequestheader">setRequestHeader()</a></code>
1267: <code>Accept-Language</code> should be set as
1268: appropriate.</li>
1269:
1270: <li><p>If not set through
1271: <code title="dom-XMLHttpRequest-setRequestHeader"><a href="#dom-xmlhttprequest-setrequestheader">setRequestHeader()</a></code>
1272: <code>Accept</code> must be set with as value
1273: <code>*/*</code>.</li>
1.233 avankest 1274: </ul>
1275:
1.343 avankest 1276: <p>Responses must have the content-encodings
1277: automatically decoded. <a href="#refsHTTP">[HTTP]</a>
1.214 avankest 1278:
1.264 avankest 1279: <hr>
1280:
1.343 avankest 1281: <p>Besides the <a href="#author-request-headers">author request headers</a> user agents
1282: should not include additional request headers other than those mentioned
1283: above or other than those authors are not allowed to set using
1284: <code title="dom-XMLHttpRequest-setRequestHeader"><a href="#dom-xmlhttprequest-setrequestheader">setRequestHeader()</a></code>.
1285: This ensures that authors have a reasonably predictable API.</p>
1.214 avankest 1286:
1287:
1.350 avankest 1288: <h4 id="infrastructure-for-the-send-method"><span class="secno">4.7.4 </span>Infrastructure for the <code title="">send()</code> method</h4>
1.205 avankest 1289:
1.343 avankest 1290: <p>The <dfn id="same-origin-request-event-rules">same-origin request event rules</dfn> are as follows:</p>
1.205 avankest 1291:
1.343 avankest 1292: <dl class="switch">
1293: <dt>If the response has an HTTP status code of 301, 302, 303, or 307</dt>
1.205 avankest 1294: <dd>
1.343 avankest 1295: <p>If the redirect violates infinite loop precautions this is a
1296: <a href="#network-error">network error</a>.</p>
1.205 avankest 1297:
1.305 avankest 1298: <p>Otherwise, run these steps:</p>
1299:
1300: <ol>
1.343 avankest 1301: <li><p>Set the <a href="#request-url">request URL</a> to the
1.346 avankest 1302: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/urls.html#url">URL</a> conveyed by the
1.343 avankest 1303: <code>Location</code> header.</li>
1304:
1305: <li><p>If the <a href="#xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</a> and the
1.346 avankest 1306: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#origin">origin</a> of <a href="#request-url">request URL</a>
1307: are <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#same-origin">same origin</a> transparently follow
1.343 avankest 1308: the redirect while observing the
1309: <a href="#same-origin-request-event-rules">same-origin request event rules</a>.
1.305 avankest 1310:
1.343 avankest 1311: <li><p>Otherwise, follow the <a href="#cross-origin-request-steps">cross-origin request steps</a>
1312: and terminate the steps for this algorithm.</li>
1.305 avankest 1313: </ol>
1.250 avankest 1314:
1.343 avankest 1315: <p class="note">HTTP places requirements on the user agent regarding the
1316: preservation of the <a href="#request-method">request method</a> and
1317: <a href="#request-entity-body">request entity body</a> during redirects, and also requires end
1318: users to be notified of certain kinds of automatic redirections.</p>
1.205 avankest 1319: <!-- XXX HTTP needs fixing here -->
1.343 avankest 1320: </dd>
1.205 avankest 1321:
1.343 avankest 1322: <dt>If the end user cancels the request</dt>
1323: <dd><p>This is an <a href="#abort-error">abort error</a>.</dd>
1.216 avankest 1324:
1.343 avankest 1325: <dt>If there is a network error</dt>
1.215 avankest 1326: <dd>
1327: <p>In case of DNS errors, TLS negotiation failure, or other type of
1.343 avankest 1328: network errors, this is a <a href="#network-error">network error</a>. Do not request any
1329: kind of end user interaction.</p>
1.342 avankest 1330:
1.343 avankest 1331: <p class="note">This does not include HTTP responses that indicate
1332: some type of error, such as HTTP status code 410.</p>
1333: </dd>
1334:
1335:
1336:
1337: <dt>Once all HTTP headers have been received, the
1338: <a href="#asynchronous-flag">asynchronous flag</a> is true, and the HTTP status code of the
1339: response is not 301, 302, 303, or 307</dt>
1340: <dd><p><a href="#switch-headers-received">Switch to the HEADERS_RECEIVED state</a>.</dd>
1341:
1342: <dt>Once the first byte (or more) of the
1343: <a href="#response-entity-body">response entity body</a> has been received and the
1344: <a href="#asynchronous-flag">asynchronous flag</a> is true</dt>
1345: <dt>If there is no <a href="#response-entity-body">response entity body</a> and the
1346: <a href="#asynchronous-flag">asynchronous flag</a> is true</dt>
1347: <dd><p><a href="#switch-loading">Switch to the LOADING state</a>.</dd>
1348:
1349: <dt>Once the whole <a href="#response-entity-body">response entity body</a> has been
1350: received</dt>
1351: <dt>If there is no <a href="#response-entity-body">response entity body</a> and the state is
1352: <a href="#dom-xmlhttprequest-loading" title="dom-XMLHttpRequest-LOADING">LOADING</a></dt>
1353: <dt>If there is no <a href="#response-entity-body">response entity body</a> and the
1354: <a href="#asynchronous-flag">asynchronous flag</a> is false</dt>
1355: <dd><p><a href="#switch-done">Switch to the DONE state</a>.</dd>
1356: </dl>
1.342 avankest 1357:
1.343 avankest 1358:
1.60 avankest 1359:
1.342 avankest 1360: <hr>
1.6 avankest 1361:
1.343 avankest 1362: <p>When something is said to be a <dfn id="network-error">network error</dfn> run the
1363: <a href="#request-error">request error</a> steps for exception
1364: <code class="external" title="dom-DOMException-NETWORK_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-network_err">NETWORK_ERR</a></code>.</p>
1365:
1366: <p>When something is said to be an <dfn id="abort-error">abort error</dfn> run the
1367: <a href="#request-error">request error</a> steps for exception
1368: <code class="external" title="dom-DOMException-ABORT_ERR"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#dom-domexception-abort_err">ABORT_ERR</a></code>.</p>
1369:
1370:
1371:
1372: <p>When something is said to be a <dfn id="request-error">request error</dfn> for
1373: exception <var>exception</var> run these
1374: steps:</p>
1.6 avankest 1375:
1.343 avankest 1376: <ol>
1377: <li><p>The user agent should cancel any network
1378: activity for which the object is responsible.</li>
1.84 avankest 1379:
1.343 avankest 1380: <li><p>If there are any
1.346 avankest 1381: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#concept-task" title="concept-task">tasks</a> from the
1.343 avankest 1382: object's <a href="#xmlhttprequest-task-source"><code>XMLHttpRequest</code> task source</a> in one of
1.346 avankest 1383: the <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#task-queue" title="task queue">task queues</a>,
1.343 avankest 1384: then remove them.
1.60 avankest 1385:
1.343 avankest 1386: <li><p>Set the the <a href="#error-flag">error flag</a> to true.</li>
1.256 avankest 1387:
1.343 avankest 1388: <li><p>Switch the state to <a href="#dom-xmlhttprequest-done" title="dom-XMLHttpRequest-DONE">DONE</a>.</li>
1.252 avankest 1389:
1.343 avankest 1390: <li><p>If the <a href="#asynchronous-flag">asynchronous flag</a> is false raise an
1391: <var>exception</var> exception and terminate the overall set of
1392: steps.</li>
1.205 avankest 1393:
1.342 avankest 1394: <li>
1.343 avankest 1395: <p><a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-event-fire" title="concept-event-fire">Fire an event</a> named <code title="event-xhr-readystatechange">readystatechange</code>.</p>
1.205 avankest 1396:
1.343 avankest 1397: <p class="note">At this point it is clear that the
1398: <a href="#asynchronous-flag">asynchronous flag</a> is true.</p>
1399: </li>
1.250 avankest 1400:
1.343 avankest 1401:
1.215 avankest 1402: </ol>
1.6 avankest 1403:
1.343 avankest 1404:
1405: <p class="note">A future version of this specification will dispatch an
1406: <code title="event-xhr-error">error</code>/<code title="event-xhr-abort">abort</code>
1407: event here as well. (Depending on the type of error.)
1408:
1.6 avankest 1409:
1.215 avankest 1410: <hr>
1.2 avankest 1411:
1.343 avankest 1412: <p>When it is said to
1413: <dfn id="switch-headers-received">switch to the HEADERS_RECEIVED state</dfn>
1414: run these steps:</p>
1.60 avankest 1415:
1.215 avankest 1416: <ol>
1.343 avankest 1417: <li><p>Switch the state to <a href="#dom-xmlhttprequest-headers_received" title="dom-XMLHttpRequest-HEADERS_RECEIVED">HEADERS_RECEIVED</a>.</li>
1.125 avankest 1418:
1.343 avankest 1419: <li><p><a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-event-fire" title="concept-event-fire">Fire an event</a> named <code title="event-xhr-readystatechange">readystatechange</code>.</li>
1.215 avankest 1420: </ol>
1.205 avankest 1421:
1.343 avankest 1422: <p>When it is said to
1423: <dfn id="switch-loading">switch to the LOADING state</dfn> run these
1424: steps:</p>
1.205 avankest 1425:
1.215 avankest 1426: <ol>
1.343 avankest 1427: <li><p>Switch the state to <a href="#dom-xmlhttprequest-loading" title="dom-XMLHttpRequest-LOADING">LOADING</a>.</li>
1.17 avankest 1428:
1.343 avankest 1429: <li><p><a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-event-fire" title="concept-event-fire">Fire an event</a> named <code title="event-xhr-readystatechange">readystatechange</code>.</li>
1.215 avankest 1430: </ol>
1.205 avankest 1431:
1.343 avankest 1432: <p>When it is said to
1433: <dfn id="switch-done">switch to the DONE state</dfn> run these steps:</p>
1.218 avankest 1434:
1435: <ol>
1.343 avankest 1436: <li><p>If the <a href="#asynchronous-flag">asynchronous flag</a> is false update the
1437: <a href="#response-entity-body">response entity body</a>.</li>
1438:
1439: <li><p>Switch the state to <a href="#dom-xmlhttprequest-done" title="dom-XMLHttpRequest-DONE">DONE</a>.</li>
1.341 avankest 1440:
1.343 avankest 1441: <li><p><a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-event-fire" title="concept-event-fire">Fire an event</a> named <code title="event-xhr-readystatechange">readystatechange</code>.</li>
1.257 avankest 1442:
1.343 avankest 1443:
1.218 avankest 1444: </ol>
1445:
1.343 avankest 1446:
1447:
1.280 avankest 1448:
1.350 avankest 1449: <h4 id="the-abort-method"><span class="secno">4.7.5 </span>The <code title="">abort()</code> method</h4>
1.341 avankest 1450:
1.343 avankest 1451: <dl class="domintro">
1452: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-abort"><a href="#dom-xmlhttprequest-abort">abort()</a></code></dt>
1453: <dd>Cancels any network activity.</dd>
1.280 avankest 1454: </dl>
1455:
1.343 avankest 1456: <p>When the
1457: <dfn id="dom-xmlhttprequest-abort" title="dom-XMLHttpRequest-abort"><code>abort()</code></dfn>
1458: method is invoked, the user agent must run these steps
1459: (unless otherwise noted). This algorithm can be
1460: <dfn id="terminate-abort" title="terminate abort()">terminated</dfn> by invoking the
1461: <code title="dom-XMLHttpRequest-open"><a href="#dom-xmlhttprequest-open">open()</a></code> method. When it is
1462: <a href="#terminate-abort" title="terminate abort()">terminated</a> the user agent
1463: must terminate the algorithm after finishing the step
1464: it is on.</p>
1465:
1466: <p class="note">The <code title="dom-XMLHttpRequest-abort"><a href="#dom-xmlhttprequest-abort">abort()</a></code>
1467: algorithm can only be terminated by invoking
1468: <code title="dom-XMLHttpRequest-open"><a href="#dom-xmlhttprequest-open">open()</a></code> from an event
1469: handler.</p>
1.205 avankest 1470:
1471: <ol>
1.343 avankest 1472: <li><p><a href="#terminate-send" title="terminate send()">Terminate the <code>send()</code> algorithm</a>.</li>
1.202 avankest 1473:
1.343 avankest 1474: <li><p>The user agent should cancel any network
1475: activity for which the object is responsible.</li>
1.254 avankest 1476:
1.343 avankest 1477: <li><p>If there are any
1.346 avankest 1478: <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#concept-task" title="concept-task">tasks</a> from the
1.343 avankest 1479: object's <a href="#xmlhttprequest-task-source"><code>XMLHttpRequest</code> task source</a> in one of
1.346 avankest 1480: the <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/webappapis.html#task-queue" title="task queue">task queues</a>,
1.343 avankest 1481: then remove them.
1.205 avankest 1482:
1.343 avankest 1483: <li><p>Set the <a href="#error-flag">error flag</a> to true.</li>
1.205 avankest 1484:
1485: <li>
1.343 avankest 1486: <p>If the state is <a href="#dom-xmlhttprequest-unsent" title="dom-XMLHttpRequest-UNSENT">UNSENT</a>,
1487: <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> with the
1488: <a href="#send-flag"><code>send()</code> flag</a> being false, or
1489: <a href="#dom-xmlhttprequest-done" title="dom-XMLHttpRequest-DONE">DONE</a> go to the next step.</p>
1.205 avankest 1490:
1491: <p>Otherwise run these substeps:</p>
1492:
1493: <ol>
1.343 avankest 1494: <li><p>Switch the state to <a href="#dom-xmlhttprequest-done" title="dom-XMLHttpRequest-DONE">DONE</a>.</li>
1495:
1496: <li><p>Set the <a href="#send-flag"><code>send()</code> flag</a> to false.</li>
1.341 avankest 1497:
1.343 avankest 1498: <li><p><a class="external" href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#concept-event-fire" title="concept-event-fire">Fire an event</a> named <code title="event-xhr-readystatechange">readystatechange</code>.</li>
1.77 avankest 1499:
1.343 avankest 1500:
1.60 avankest 1501: </ol>
1.17 avankest 1502:
1.343 avankest 1503:
1504: <p class="note">A future version of this specification will dispatch an
1505: <code title="event-xhr-abort">abort</code> event here.</p>
1506:
1507: </li>
1.220 avankest 1508:
1.205 avankest 1509: <li>
1.343 avankest 1510: <p>Switch the state to <a href="#dom-xmlhttprequest-unsent" title="dom-XMLHttpRequest-UNSENT">UNSENT</a>.</p>
1.205 avankest 1511:
1.343 avankest 1512: <p class="note">No <code title="event-xhr-readystatechange">readystatechange</code> event is dispatched.</p>
1513: </li>
1.205 avankest 1514: </ol>
1515:
1516:
1517:
1.350 avankest 1518: <h3 id="response"><span class="secno">4.8 </span>Response</h3>
1.343 avankest 1519:
1.350 avankest 1520: <h4 id="the-status-attribute"><span class="secno">4.8.1 </span>The <code title="">status</code> attribute</h4>
1.341 avankest 1521:
1.343 avankest 1522: <dl class="domintro">
1523: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-status"><a href="#dom-xmlhttprequest-status">status</a></code></dt>
1524: <dd><p>Returns the HTTP status code.</dd>
1.281 avankest 1525: </dl>
1526:
1.343 avankest 1527: <p>The
1528: <dfn id="dom-xmlhttprequest-status" title="dom-XMLHttpRequest-status"><code>status</code></dfn>
1529: attribute must return the result of running these
1530: steps:</p>
1.224 avankest 1531:
1532: <ol>
1.343 avankest 1533: <li><p>If the state is <a href="#dom-xmlhttprequest-unsent" title="dom-XMLHttpRequest-UNSENT">UNSENT</a> or
1534: <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> return 0 and terminate these
1535: steps.</li>
1.224 avankest 1536:
1.343 avankest 1537: <li><p>If the <a href="#error-flag">error flag</a> is true return 0 and terminate
1538: these steps.</li>
1.224 avankest 1539:
1.343 avankest 1540: <li><p>Return the HTTP status code.</li>
1.224 avankest 1541: </ol>
1.205 avankest 1542:
1543:
1.350 avankest 1544: <h4 id="the-statustext-attribute"><span class="secno">4.8.2 </span>The <code title="">statusText</code> attribute</h4>
1.281 avankest 1545:
1.343 avankest 1546: <dl class="domintro">
1547: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-statusText"><a href="#dom-xmlhttprequest-statustext">statusText</a></code></dt>
1548: <dd><p>Returns the HTTP status text.</dd>
1.281 avankest 1549: </dl>
1550:
1.343 avankest 1551: <p>The
1552: <dfn id="dom-xmlhttprequest-statustext" title="dom-XMLHttpRequest-statusText"><code>statusText</code></dfn>
1553: attribute must return the result of running these
1554: steps:</p>
1.224 avankest 1555:
1556: <ol>
1.343 avankest 1557: <li><p>If the state is <a href="#dom-xmlhttprequest-unsent" title="dom-XMLHttpRequest-UNSENT">UNSENT</a> or
1558: <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> return the empty string and
1559: terminate these steps.</li>
1.224 avankest 1560:
1.343 avankest 1561: <li><p>If the <a href="#error-flag">error flag</a> is true return the empty string and
1562: terminate these steps.</li>
1.224 avankest 1563:
1.343 avankest 1564: <li><p>Return the HTTP status text.</li>
1.224 avankest 1565: </ol>
1.205 avankest 1566:
1567:
1.350 avankest 1568: <h4 id="the-getresponseheader-method"><span class="secno">4.8.3 </span>The <code title="">getResponseHeader()</code> method</h4>
1.283 avankest 1569:
1.343 avankest 1570: <dl class="domintro">
1571: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-getResponseHeader"><a href="#dom-xmlhttprequest-getresponseheader">getResponseHeader(<var title="">header</var>)</a></code></dt>
1572: <dd><p>Returns the header field value from the response of which the
1573: field name matches <var title="">header</var>, unless the field name is
1574: <code>Set-Cookie</code> or <code>Set-Cookie2</code>.</p>
1.283 avankest 1575: </dl>
1576:
1.343 avankest 1577: <p>When the
1578: <dfn id="dom-xmlhttprequest-getresponseheader" title="dom-XMLHttpRequest-getResponseHeader"><code>getResponseHeader(<var title="">header</var>)</code></dfn>
1579: is invoked, the user agent must run these steps:</p>
1.205 avankest 1580:
1581: <ol>
1.343 avankest 1582: <li><p>If the state is <a href="#dom-xmlhttprequest-unsent" title="dom-XMLHttpRequest-UNSENT">UNSENT</a> or
1583: <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> return null and terminate these
1584: steps.</li>
1585:
1586: <li><p>If the <a href="#error-flag">error flag</a> is true return null
1587: and terminate these steps.</li>
1588:
1589: <li><p>If any code point in <var>header</var> is higher than
1590: U+00FF LATIN SMALL LETTER Y WITH DIAERESIS return null and terminate
1591: these steps.</li>
1592:
1593: <li><p>Let <var>header</var> be the result of
1594: <a href="#deflate-a-domstring-into-a-byte-sequence" title="deflate a DOMString into a byte sequence">deflating</a>
1595: <var>header</var>.</li> <!-- This sounds lame, but it works. -->
1596:
1597: <li><p>If <var>header</var> is a case-insensitive match for
1598: <code>Set-Cookie</code> or <code>Set-Cookie2</code> return null and
1599: terminate these steps.</li>
1600:
1601: <li><p>If <var>header</var> is a case-insensitive match for multiple HTTP
1602: response headers, return the
1603: <a href="#inflate-a-byte-sequence-into-a-domstring" title="inflate a byte sequence into a DOMString">inflated</a>
1604: values of these headers as a single concatenated string separated from
1605: each other by a U+002C COMMA U+0020 SPACE character pair and terminate
1606: these steps.</li>
1607:
1608: <li><p>If <var>header</var> is a case-insensitive match for a single HTTP
1609: response header, return the
1610: <a href="#inflate-a-byte-sequence-into-a-domstring" title="inflate a byte sequence into a DOMString">inflated</a>
1611: value of that header and terminate these steps.</li>
1.342 avankest 1612:
1.343 avankest 1613: <li><p>Return null.</li>
1614: </ol>
1.342 avankest 1615:
1.343 avankest 1616:
1.342 avankest 1617:
1.343 avankest 1618: <div class="example">
1.342 avankest 1619:
1.252 avankest 1620: <p>For the following script:</p>
1621:
1622: <pre><code>var client = new XMLHttpRequest();
1623: client.open("GET", "unicorns-are-teh-awesome.txt", true);
1.6 avankest 1624: client.send();
1.16 avankest 1625: client.onreadystatechange = function() {
1.252 avankest 1626: if(this.readyState == 2) {
1627: print(client.getResponseHeader("Content-Type"));
1628: }
1629: }</code></pre>
1630:
1.343 avankest 1631: <p>The <code>print()</code> function will get to process something
1632: like:</p>
1.1 avankest 1633:
1.252 avankest 1634: <pre><code>text/plain; charset=UTF-8</code></pre>
1.205 avankest 1635: </div>
1636:
1.2 avankest 1637:
1.350 avankest 1638: <h4 id="the-getallresponseheaders-method"><span class="secno">4.8.4 </span>The <code title="">getAllResponseHeaders()</code> method</h4>
1.283 avankest 1639:
1.343 avankest 1640: <dl class="domintro">
1641: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-getAllResponseHeaders"><a href="#dom-xmlhttprequest-getallresponseheaders">getAllResponseHeaders()</a></code></dt>
1642: <dd><p>Returns all headers from the response, with the exception of those
1643: whose field name is <code>Set-Cookie</code> or
1644: <code>Set-Cookie2</code>.</dd>
1.283 avankest 1645: </dl>
1646:
1.343 avankest 1647: <p>When the
1648: <dfn id="dom-xmlhttprequest-getallresponseheaders" title="dom-XMLHttpRequest-getAllResponseHeaders"><code>getAllResponseHeaders()</code></dfn>
1649: method is invoked, the user agent must run these steps:</p>
1.6 avankest 1650:
1.205 avankest 1651: <ol>
1.343 avankest 1652: <li><p>If the state is <a href="#dom-xmlhttprequest-unsent" title="dom-XMLHttpRequest-UNSENT">UNSENT</a> or
1653: <a href="#dom-xmlhttprequest-opened" title="dom-XMLHttpRequest-OPENED">OPENED</a> return the empty string and
1654: terminate these steps.</li>
1655:
1656: <li><p>If the <a href="#error-flag">error flag</a> is true return the empty string and
1657: terminate these steps.</li>
1658:
1659: <li><p>Return all the HTTP headers, excluding headers that are a
1660: case-insensitive match for <code>Set-Cookie</code> or
1661: <code>Set-Cookie2</code>,
1662: <a href="#inflate-a-byte-sequence-into-a-domstring" title="inflate a byte sequence into a DOMString">inflated</a>,
1663: as a single string, with each header line
1664: separated by a U+000D CR U+000A LF pair, excluding the status line, and
1665: with each header name and header value separated by a
1666: U+003A COLON U+0020 SPACE pair.</li>
1667: </ol>
1.342 avankest 1668:
1.343 avankest 1669:
1.205 avankest 1670:
1.343 avankest 1671: <div class="example">
1.252 avankest 1672: <p>For the following script:</p>
1673:
1674: <pre><code>var client = new XMLHttpRequest();
1675: client.open("GET", "narwhals-too.txt", true);
1.205 avankest 1676: client.send();
1677: client.onreadystatechange = function() {
1.312 avankest 1678: if(this.readyState == 2) {
1679: print(this.getAllResponseHeaders());
1680: }
1.252 avankest 1681: }</code></pre>
1682:
1.343 avankest 1683: <p>The <code>print()</code> function will get to process something
1684: like:</p>
1.205 avankest 1685:
1.252 avankest 1686: <pre><code>Date: Sun, 24 Oct 2004 04:58:38 GMT
1.205 avankest 1687: Server: Apache/1.3.31 (Unix)
1688: Keep-Alive: timeout=15, max=99
1689: Connection: Keep-Alive
1690: Transfer-Encoding: chunked
1691: Content-Type: text/plain; charset=utf-8</code></pre>
1692: </div>
1693:
1.250 avankest 1694:
1.343 avankest 1695:
1.350 avankest 1696: <h4 id="response-entity-body-0"><span class="secno">4.8.5 </span>Response entity body</h4>
1.343 avankest 1697:
1698: <p>The <dfn id="response-mime-type">response MIME type</dfn> is the MIME
1699: type the <code>Content-Type</code> header contains without any
1700: parameters or null if the header could not be parsed properly or was
1701: omitted. The <dfn id="override-mime-type">override MIME type</dfn> is
1702: always null. <dfn id="final-mime-type">Final MIME type</dfn> is the
1703: override MIME type unless that is null in which case it is the response
1704: MIME type.</p>
1705:
1706: <p>The <dfn id="response-charset">response charset</dfn> is the value of
1707: the <code>charset</code> parameter of the <code>Content-Type</code> header
1708: or null if there was no <code>charset</code> parameter or if
1709: the header could not be parsed properly or was omitted. The
1710: <dfn id="override-charset">override charset</dfn> is always null.
1711: <dfn id="final-charset">Final charset</dfn> is the override charset unless
1712: that is null in which case it is the response charset.</p>
1713:
1714:
1715: <p class="note"><a href="#override-mime-type">Override MIME type</a> and
1716: <a href="#override-charset">override charset</a> are introduced here solely to make editing
1717: several levels of XMLHttpRequest simultaneously somewhat easier. Apologies
1718: for any confusion they might cause.</p>
1719:
1.250 avankest 1720:
1721: <hr>
1.205 avankest 1722:
1.343 avankest 1723: <p>The <dfn id="response-entity-body">response entity body</dfn> is the
1724: fragment of the <a class="external" href="http://tools.ietf.org/html/rfc2616/#section-7.2">entity body</a> of the
1725: response received so far
1726: (<a href="#dom-xmlhttprequest-loading" title="dom-XMLHttpRequest-LOADING">LOADING</a>) or the complete
1727: entity body of the response
1728: (<a href="#dom-xmlhttprequest-done" title="dom-XMLHttpRequest-DONE">DONE</a>). If the response
1729: does not have an entity body the response entity body is null.</p>
1730:
1731: <p class="note">The <a href="#response-entity-body">response entity body</a> is updated as part
1732: of the <code title="dom-XMLHttpRequest-send"><a href="#dom-xmlhttprequest-send">send()</a></code> algorithm.</p>
1.205 avankest 1733:
1734: <hr>
1735:
1.343 avankest 1736: <p>The <dfn id="text-response-entity-body">text response entity body</dfn>
1737: is a <code>DOMString</code> representing the <a href="#response-entity-body">response entity
1738: body</a>. The text response entity body is the return value of the
1739: following algorithm:</p>
1.205 avankest 1740:
1741: <ol>
1.343 avankest 1742: <li><p>If the response entity body is null return the empty string and
1743: terminate these steps.</p>
1.250 avankest 1744:
1.343 avankest 1745: <li><p>Let <var>charset</var> be the <a href="#final-charset">final charset</a>.</li>
1.205 avankest 1746:
1.343 avankest 1747: <li><p>Let <var>mime</var> be the <a href="#final-mime-type">final MIME type</a>.</li>
1.205 avankest 1748:
1.343 avankest 1749: <li><p>If <var>charset</var> is null and <var>mime</var> is null,
1750: <code>text/xml</code>, <code>application/xml</code> or ends in
1751: <code title="">+xml</code> use the rules set forth in the XML
1752: specifications to determine the character encoding. Let
1753: <var>charset</var> be the determined character encoding.</li>
1754:
1755: <li><p>If <var>charset</var> is null and <var>mime</var> is
1756: <code>text/html</code> follow the rules set forth in the HTML
1757: specification to determine the character encoding. Let
1758: <var>charset</var> be the determined character encoding.
1759: <a href="#refsHTML">[HTML]</a>
1.205 avankest 1760:
1761: <li>
1762: <p>If <var>charset</var> is null then, for each of the rows in the
1.343 avankest 1763: following table, starting with the first one and going down, if the first
1764: bytes of <var>bytes</var> match the bytes given in the first column, then
1765: let <var>charset</var> be the encoding given in the cell in the second
1766: column of that row. If there is no match <var>charset</var> remains
1767: null.</p>
1.205 avankest 1768:
1769: <table>
1770: <thead>
1771: <tr>
1772: <th>Bytes in Hexadecimal
1773: <th>Description
1.239 avankest 1774: <tbody>
1.205 avankest 1775: <tr>
1776: <td>FE FF
1777: <td>UTF-16BE BOM
1778: <tr>
1779: <td>FF FE
1780: <td>UTF-16LE BOM
1781: <tr>
1782: <td>EF BB BF
1.239 avankest 1783: <td>UTF-8 BOM
1.205 avankest 1784: </table>
1.343 avankest 1785: </li>
1.205 avankest 1786:
1.343 avankest 1787: <li><p>If <var>charset</var> is null let <var>charset</var> be
1788: UTF-8.</li>
1.205 avankest 1789:
1.343 avankest 1790: <li><p>Return the result of decoding the response entity body using
1791: <var>charset</var>. Replace bytes or sequences of bytes that are not
1792: valid accordng to the <var>charset</var> with a single
1793: U+FFFD REPLACEMENT CHARACTER character. Remove one leading
1794: U+FEFF BYTE ORDER MARK character, if present.</li>
1.205 avankest 1795: </ol>
1796:
1.343 avankest 1797: <p class="note">Authors are strongly encouraged to always encode their
1798: resources using UTF-8.</p>
1.205 avankest 1799:
1800: <hr>
1801:
1.343 avankest 1802: <p>The <dfn id="document-response-entity-body">document response entity
1803: body</dfn> is either a <code class="external"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#document">Document</a></code> representing the
1804: <a href="#response-entity-body">response entity body</a> or null. If it is a
1.346 avankest 1805: <code class="external"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#document">Document</a></code> its <a class="external" href="http://www.whatwg.org/specs/web-apps/current-work/multipage/origin-0.html#origin">origin</a> is the
1.343 avankest 1806: <a href="#xmlhttprequest-origin"><code>XMLHttpRequest</code> origin</a>. If the
1807: <a href="#document-response-entity-body">document response entity body</a> has no value assigned to it let
1808: it be the return value of the following algorithm:</p>
1.89 avankest 1809:
1.205 avankest 1810: <ol>
1.343 avankest 1811: <li><p>If the <a href="#response-entity-body">response entity body</a> is null, return null and
1812: terminate these steps.</li>
1.342 avankest 1813:
1.343 avankest 1814: <li><p>If <a href="#final-mime-type">final MIME type</a> is not null,
1815: <code>text/xml</code>,
1816: <code>application/xml</code>, or does not end in
1817: <code title="">+xml</code>, return null and terminate these
1818: steps.</li>
1819:
1820:
1821:
1822: <li>
1823: <p>Let <var title="">document</var> be a
1824: <code class="external"><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#document">Document</a></code> object that represents the result of parsing the
1825: <a href="#response-entity-body">response entity body</a> into a document tree following the
1826: rules set forth in the XML specifications. If that fails
1827: (unsupported character encoding, namespace well-formedness error et
1828: cetera) return null and terminate these steps.
1829: <a href="#refsXML">[XML]</a> <a href="#refsXMLNS">[XMLNS]</a>
1830:
1831: <p class="note">Scripts in the resulting document tree will not be executed,
1832: resources referenced will not be loaded and no associated XSLT will be
1833: applied.</p> <!-- XXX more formally?! -->
1834: </li>
1.6 avankest 1835:
1.343 avankest 1836: <li><p>Return <var title="">document</var>.</li>
1837: </ol>
1.12 avankest 1838:
1.343 avankest 1839:
1.76 avankest 1840:
1.12 avankest 1841:
1.350 avankest 1842: <h4 id="the-responsetext-attribute"><span class="secno">4.8.6 </span>The <code title="">responseText</code> attribute</h4>
1.281 avankest 1843:
1.343 avankest 1844: <dl class="domintro">
1845: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-responseText"><a href="#dom-xmlhttprequest-responsetext">responseText</a></code></dt>
1.281 avankest 1846: <dd>
1.343 avankest 1847: <p>Returns the <a href="#text-response-entity-body">text response entity body</a>.</p>
1848:
1849: </dd>
1.281 avankest 1850: </dl>
1851:
1.343 avankest 1852: <p>The
1853: <dfn id="dom-xmlhttprequest-responsetext" title="dom-XMLHttpRequest-responseText"><code>responseText</code></dfn>
1854: attribute must return the result of running these
1855: steps:</p>
1.6 avankest 1856:
1.205 avankest 1857: <ol>
1.343 avankest 1858:
1859:
1860: <li><p>If the state is not <a href="#dom-xmlhttprequest-loading" title="dom-XMLHttpRequest-LOADING">LOADING</a> or
1861: <a href="#dom-xmlhttprequest-done" title="dom-XMLHttpRequest-DONE">DONE</a> return the empty string and
1862: terminate these steps.</li>
1.341 avankest 1863:
1.343 avankest 1864: <li><p>If the <a href="#error-flag">error flag</a> is true return the empty string and
1865: terminate these steps.</li>
1.12 avankest 1866:
1.343 avankest 1867: <li><p>Return the <a href="#text-response-entity-body">text response entity body</a>.</li>
1.205 avankest 1868: </ol>
1.2 avankest 1869:
1870:
1.350 avankest 1871: <h4 id="the-responsexml-attribute"><span class="secno">4.8.7 </span>The <code title="">responseXML</code> attribute</h4>
1.281 avankest 1872:
1.343 avankest 1873: <dl class="domintro">
1874: <dt><var title="">client</var> . <code title="dom-XMLHttpRequest-responseXML"><a href="#dom-xmlhttprequest-responsexml">responseXML</a></code></dt>
1.281 avankest 1875: <dd>
1.343 avankest 1876: <p>Returns the <a href="#document-response-entity-body">document response entity body</a>.</p>
1877:
1878: </dd>
1.281 avankest 1879: </dl>
1880:
1.343 avankest 1881: <p>The
1882: <dfn id="dom-xmlhttprequest-responsexml" title="dom-XMLHttpRequest-responseXML"><code>responseXML</code></dfn>
1.344 avankest 1883: attribute must return the result of running these steps:</p>
1.2 avankest 1884:
1.205 avankest 1885: <ol>
1.343 avankest 1886:
1887:
1888: <li><p>If the state is not <a href="#dom-xmlhttprequest-done" title="dom-XMLHttpRequest-DONE">DONE</a> return
1889: null and terminate these steps.</li>
1.342 avankest 1890:
1.343 avankest 1891: <li><p>If the <a href="#error-flag">error flag</a> is true return null and terminate
1892: these steps.</li>
1.341 avankest 1893:
1.343 avankest 1894: <li><p>Return the <a href="#document-response-entity-body">document response entity body</a>.</li>
1.342 avankest 1895: </ol>
1.2 avankest 1896:
1.343 avankest 1897:
1.2 avankest 1898:
1.18 avankest 1899:
1.343 avankest 1900: <h2 class="no-num" id="references">References</h2>
1901: <h3 class="no-num" id="normative-references">Normative references</h3>
1902: <div id="anolis-references-normative"><dl><dt id="refsCOOKIES">[COOKIES]
1.346 avankest 1903: <dd><cite><a href="http://tools.ietf.org/html/rfc6265">HTTP State Management Mechanism</a></cite>, Adam Barth. IETF.
1.343 avankest 1904:
1905: <dt id="refsDOMCORE">[DOMCORE]
1.346 avankest 1906: <dd><cite><a href="http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html">DOM Core</a></cite>, Anne van Kesteren and Ms2ger. W3C.
1.343 avankest 1907:
1908: <dt id="refsFILEAPI">[FILEAPI]
1.346 avankest 1909: <dd><cite><a href="http://dev.w3.org/2006/webapi/FileAPI/">File API</a></cite>, Arun Ranganathan and Jonas Sicking. W3C.
1.343 avankest 1910:
1911: <dt id="refsHTML">[HTML]
1.346 avankest 1912: <dd><cite><a href="http://www.whatwg.org/html">HTML</a></cite>, Ian Hickson. WHATWG.
1.343 avankest 1913:
1914: <dt id="refsHTTP">[HTTP]
1.347 avankest 1915: <dd><cite><a href="http://tools.ietf.org/html/rfc2616">Hypertext Transfer Protocol -- HTTP/1.1</a></cite>, Roy Fielding, James Gettys, Jeffrey Mogul et al.. IETF.
1.343 avankest 1916:
1917: <dt id="refsHTTPAUTH">[HTTPAUTH]
1.347 avankest 1918: <dd><cite><a href="http://tools.ietf.org/html/rfc2617">HTTP Authentication: Basic and Digest Access Authentication</a></cite>, J. Franks, Phillip Hallam-Baker, J. Hostetler et al.. IETF.
1.343 avankest 1919:
1920: <dt id="refsHTTPVERBSEC">[HTTPVERBSEC]
1921: <dd><cite><a href="http://www.kb.cert.org/vuls/id/867593">Multiple vendors' web servers enable HTTP TRACE method by default</a></cite>. US-CERT.
1922:
1923: <dd><cite><a href="http://www.kb.cert.org/vuls/id/288308">Microsoft Internet Information Server (IIS) vulnerable to cross-site scripting via HTTP TRACK method</a></cite>. US-CERT.
1924:
1925: <dd><cite><a href="http://www.kb.cert.org/vuls/id/150227">HTTP proxy default configurations allow arbitrary TCP connections</a></cite>. US-CERT.
1926:
1927: <dt id="refsRFC2119">[RFC2119]
1.346 avankest 1928: <dd><cite><a href="http://tools.ietf.org/html/rfc2119">Key words for use in RFCs to Indicate Requirement Levels</a></cite>, Scott Bradner. IETF.
1.343 avankest 1929:
1930: <dt id="refsWEBIDL">[WEBIDL]
1.346 avankest 1931: <dd><cite><a href="http://dev.w3.org/2006/webapi/WebIDL/">Web IDL</a></cite>, Cameron McCormack. W3C.
1.343 avankest 1932:
1933: <dt id="refsXML">[XML]
1.346 avankest 1934: <dd><cite><a href="http://www.w3.org/TR/xml/">Extensible Markup Language</a></cite>, Tim Bray, Jean Paoli, C. M. Sperberg-McQueen et al.. W3C.
1.343 avankest 1935:
1936: <dt id="refsXMLNS">[XMLNS]
1.346 avankest 1937: <dd><cite><a href="http://www.w3.org/TR/xml-names/">Namespaces in XML</a></cite>, Tim Bray, Dave Hollander, Andrew Layman et al.. W3C.
1.343 avankest 1938:
1939: </dl></div>
1940:
1941: <h3 class="no-num" id="informative-references">Informative references</h3>
1942: <div id="anolis-references-informative"><dl><dt id="refsECMASCRIPT">[ECMASCRIPT]
1943: <dd><cite><a href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">ECMAScript Language Specification</a></cite>. ECMA.
1944:
1945: </dl></div>
1946:
1947:
1948:
1949: <h2 class="no-num" id="acknowledgments">Acknowledgments</h2>
1950:
1951: <p>The editor would like to thank
1952:
1953: Addison Phillips,
1954: Ahmed Kamel,
1955: Alex Hopmann,
1956: Alex Vincent,
1957: Alexey Proskuryakov,
1958: Asbjørn Ulsberg,
1959: Boris Zbarsky,
1960: Björn Höhrmann,
1961: Cameron McCormack,
1962: Chris Marrin,
1963: Christophe Jolif,
1964: Charles McCathieNevile,
1965: Dan Winship,
1966: David Andersson,
1967: David Flanagan,
1968: David Håsäther,
1969: David Levin,
1970: Dean Jackson,
1971: Denis Sureau,
1972: Doug Schepers,
1973: Douglas Livingstone,
1974: Elliotte Harold,
1975: Eric Lawrence,
1976: Eric Uhrhane,
1977: Erik Dahlström,
1978: Geoffrey Sneddon,
1979: Gideon Cohn,
1980: Gorm Haug Eriksen,
1981: Håkon Wium Lie,
1982: Hallvord R. M. Steen,
1983: Henri Sivonen,
1984: Huub Schaeks,
1985: Ian Davis,
1986: Ian Hickson,
1987: Ivan Herman,
1988: Jeff Walden,
1989: Jens Lindström,
1990: Jim Deegan,
1991: Jim Ley,
1992: Joe Farro,
1993: Jonas Sicking,
1994: Julian Reschke,
1995: Karl Dubost,
1996: Lachlan Hunt,
1997: Maciej Stachowiak,
1998: Magnus Kristiansen,
1999: Marc Hadley,
2000: Marcos Caceres,
2001: Mark Baker,
2002: Mark Birbeck,
2003: Mark Nottingham,
2004: Mark S. Miller,
2005: Martin Hassman,
2006: Mohamed Zergaoui,
2007: Olli Pettay,
2008: Pawel Glowacki,
2009: Peter Michaux,
2010: Philip Taylor,
2011: Robin Berjon,
2012: Rune Halvorsen,
2013: Ruud Steltenpool,
2014: Sergiu Dumitriu,
2015: Simon Pieters,
2016: Stewart Brodie,
2017: Sunava Dutta,
2018: Thomas Roessler,
2019: Tom Magliery, and
2020: Zhenbin Xu
2021:
2022: for their contributions to this specification.</p>
2023:
2024: <p>Special thanks to the Microsoft employees who first implemented the
2025: <code title="">XMLHttpRequest</code> interface, which was first widely
2026: deployed by the Windows Internet Explorer browser.</p>
1.2 avankest 2027:
1.56 avankest 2028: <p>Special thanks also to the WHATWG for drafting an initial version of
1.343 avankest 2029: this specification in their Web Applications 1.0 document (now renamed to
2030: HTML). <a href="#refsHTML">[HTML]</a></p>
1.2 avankest 2031:
2032: <p>Thanks also to all those who have helped to improve this specification
1.343 avankest 2033: by sending suggestions and corrections. (Please, keep bugging us with your
2034: issues!)</p>
2035:
2036:
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