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5: <title>The XMLHttpRequest Object</title>
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1.2 avankest 23:
1.1 avankest 24: <body>
1.25 avankest 25: <div class=head>
26: <p><a href="http://www.w3.org/"><img alt=W3C height=48
27: src="http://www.w3.org/Icons/w3c_home" width=72></a></p>
1.2 avankest 28:
1.25 avankest 29: <h1 class=head id=the-xmlhttprequest>The <code
1.14 avankest 30: title="">XMLHttpRequest</code> Object</h1>
1.2 avankest 31:
1.55 avankest 32: <h2 class="no-num no-toc" id=pagesubtitle>Editor's
1.115 ! avankest 33: draft<!--W3C Working Draft--> 23 May 2007</h2>
1.2 avankest 34:
1.1 avankest 35: <dl>
1.14 avankest 36: <dt>This Version:
1.2 avankest 37:
38: <dd><a
1.115 ! avankest 39: href="http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070523/">http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070523/</a>
1.2 avankest 40:
1.14 avankest 41: <dt>Latest Version:
1.2 avankest 42:
43: <dd><a
44: href="http://www.w3.org/TR/XMLHttpRequest/">http://www.w3.org/TR/XMLHttpRequest/</a>
45:
1.14 avankest 46: <dt>Previous Versions:
1.2 avankest 47:
48: <dd><a
1.60 avankest 49: href="http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070227/">http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070227/</a>
50:
51: <dd><a
1.25 avankest 52: href="http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060927/">http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060927/</a>
53:
54: <dd><a
1.2 avankest 55: href="http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060619/">http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060619/</a>
56:
57: <dd><a
58: href="http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060405/">http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060405/</a>
59:
60: <dt>Editor:
61:
62: <dd><a href="http://annevankesteren.nl/">Anne van Kesteren</a> (<a
63: href="http://www.opera.com/">Opera Software ASA</a>) <<a
64: href="mailto:annevk@opera.com">annevk@opera.com</a>>
1.1 avankest 65: </dl>
1.2 avankest 66:
1.25 avankest 67: <p class=copyright><a
1.2 avankest 68: href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a>
1.53 avankest 69: © 2007 <a href="http://www.w3.org/"><acronym title="World Wide Web
70: Consortium">W3C</acronym></a><sup>®</sup> (<a
71: href="http://www.csail.mit.edu/"><acronym title="Massachusetts Institute
72: of Technology">MIT</acronym></a>, <a
73: href="http://www.ercim.org/"><acronym title="European Research Consortium
74: for Informatics and Mathematics">ERCIM</acronym></a>, <a
1.2 avankest 75: href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a
76: href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>,
77: <a
78: href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a>
79: and <a
80: href="http://www.w3.org/Consortium/Legal/copyright-documents">document
81: use</a> rules apply.</p>
1.1 avankest 82: </div>
1.2 avankest 83:
84: <hr>
85:
1.25 avankest 86: <h2 class="no-num no-toc" id=specabstract>Abstract</h2>
1.2 avankest 87:
1.25 avankest 88: <p>The <code title="">XMLHttpRequest</code> Object specification defines an
89: <abbr title="Application Programming Interface">API</abbr> that provides
90: scripted client functionality for transferring data between a client and a
91: server.
92:
93: <h2 class="no-num no-toc" id=sotd>Status of this Document</h2>
1.2 avankest 94:
95: <p><em>This section describes the status of this document at the time of
96: its publication. Other documents may supersede this document. A list of
97: current W3C publications and the latest revision of this technical report
98: can be found in the <a href="http://www.w3.org/TR/">W3C technical reports
1.65 avankest 99: index</a> at http://www.w3.org/TR/.</em></p>
100: <!-- change back to Last Call -->
1.2 avankest 101:
1.115 ! avankest 102: <p>This is the 23 May 2007 <strong>Editor's</strong> Working Draft of The
1.65 avankest 103: <code title="">XMLHttpRequest</code> Object specification. Please send
1.49 avankest 104: comments to <a href="mailto:public-webapi@w3.org">public-webapi@w3.org</a>
105: (<a
106: href="http://lists.w3.org/Archives/Public/public-webapi/">archived</a>)
107: with either <samp>[XHR]</samp> or <samp title="">[XMLHttpRequest]</samp>
1.65 avankest 108: at the start of the subject line<!-- by 2 April 2007-->.
1.49 avankest 109:
110: <p>This document is produced by the <a
111: href="http://www.w3.org/2006/webapi/">Web API Working Group</a>, part of
112: the <a href="http://www.w3.org/2006/rwc/Activity">Rich Web Clients
113: Activity</a> in the W3C <a
114: href="http://www.w3.org/Interaction/">Interaction Domain</a>. Changes made
115: to this document can be found in the <a
116: href="http://dev.w3.org/cvsweb/2006/webapi/XMLHttpRequest/Overview.html">W3C
117: public CVS server</a>.
1.2 avankest 118:
119: <p>Publication as a Working Draft does not imply endorsement by the W3C
120: Membership. This is a draft document and may be updated, replaced or
121: obsoleted by other documents at any time. It is inappropriate to cite this
122: document as other than work in progress.
123:
124: <p>This document was produced by a group operating under the <a
125: href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February
1.54 avankest 126: 2004 W3C Patent Policy</a>. W3C maintains a <a
127: href="http://www.w3.org/2004/01/pp-impl/38482/status"
1.25 avankest 128: rel=disclosure>public list of any patent disclosures</a> made in
1.2 avankest 129: connection with the deliverables of the group; that page also includes
130: instructions for disclosing a patent. An individual who has actual
131: knowledge of a patent which the individual believes contains <a
132: href="http://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential">Essential
133: Claim(s)</a> must disclose the information in accordance with <a
134: href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section
135: 6 of the W3C Patent Policy</a>.
136:
1.25 avankest 137: <h2 class="no-num no-toc" id=toc>Table of Contents</h2>
1.2 avankest 138: <!--begin-toc-->
139:
1.25 avankest 140: <ul class=toc>
141: <li><a href="#introduction"><span class=secno>1. </span>Introduction</a>
142: <ul class=toc>
1.31 avankest 143: <li><a href="#examples"><span class=secno>1.1. </span>Examples of
1.2 avankest 144: Usage</a>
145:
1.31 avankest 146: <li><a href="#conformance"><span class=secno>1.2. </span>Conformance</a>
1.25 avankest 147:
1.31 avankest 148: <ul class=toc>
149: <li><a href="#dependencies"><span class=secno>1.2.1.
1.32 avankest 150: </span>Dependencies</a>
1.81 avankest 151:
152: <li><a href="#terminology"><span class=secno>1.2.2.
153: </span>Terminology</a>
154:
155: <li><a href="#extensibility"><span class=secno>1.2.3.
156: </span>Extensibility</a>
1.31 avankest 157: </ul>
1.2 avankest 158: </ul>
159:
1.25 avankest 160: <li><a href="#xmlhttprequest"><span class=secno>2. </span>The <code
1.16 avankest 161: title="">XMLHttpRequest</code> Object</a>
1.25 avankest 162: <ul class=toc>
1.60 avankest 163: <li><a href="#events"><span class=secno>2.1. </span>Events for the <code
1.33 avankest 164: title="">XMLHttpRequest</code> Object</a>
165:
1.60 avankest 166: <li><a href="#exceptions"><span class=secno>2.2. </span>Exceptions for
1.33 avankest 167: the <code title="">XMLHttpRequest</code> Object</a>
1.11 avankest 168: </ul>
1.2 avankest 169:
1.31 avankest 170: <li class=no-num><a href="#notcovered">Not in this Specification</a>
171:
1.25 avankest 172: <li class=no-num><a href="#bibref">References</a>
1.2 avankest 173:
1.25 avankest 174: <li class=no-num><a href="#acknowledgements">Acknowledgements</a>
1.2 avankest 175: </ul>
176: <!--end-toc-->
177:
1.25 avankest 178: <h2 id=introduction><span class=secno>1. </span>Introduction</h2>
1.2 avankest 179:
180: <p><em>This section is non-normative.</em>
181:
1.60 avankest 182: <p>The <code><a href="#xmlhttprequest-object">XMLHttpRequest</a></code>
183: object implements an interface exposed by a scripting engine that allows
184: scripts to perform HTTP client functionality, such as submitting form data
185: or loading data from a server.
1.2 avankest 186:
187: <p>The name of the object is <code><a
1.60 avankest 188: href="#xmlhttprequest-object">XMLHttpRequest</a></code> for compatibility
189: with the web, though each component of this name is potentially
190: misleading. First, the object supports any text based format, including
191: XML. Second, it can be used to make requests over both HTTP and HTTPS
192: (some implementations support protocols in addition to HTTP and HTTPS, but
193: that functionality is not covered by this specification). Finally, it
194: supports "requests" in a broad sense of the term as it pertains to HTTP;
195: namely all activity involved with HTTP requests or responses for the
196: defined HTTP methods.
1.2 avankest 197:
1.31 avankest 198: <h3 id=examples><span class=secno>1.1. </span>Examples of Usage</h3>
1.2 avankest 199:
200: <p><em>This section is non-normative.</em>
201:
1.34 avankest 202: <p>Some [<cite><a href="#ref-ecmascript">ECMAScript</a></cite>] examples
203: are listed in the specification. In addition, you can find some below.
1.2 avankest 204:
1.25 avankest 205: <div class=example>
1.18 avankest 206: <p>Some simple code to do something with data from an XML document fetched
207: over the network:</p>
208:
1.60 avankest 209: <pre><code>function test(data) {
1.18 avankest 210: // taking care of data
211: }
212:
213: function handler() {
214: if(this.readyState == 4 && this.status == 200) {
215: // so far so good
216: if(this.responseXML != null && this.responseXML.getElementById('test').firstChild.data)
217: // success!
218: test(this.responseXML.getElementById('test').firstChild.data);
219: else
220: test(null);
221: } else if (this.readyState == 4 && this.status != 200) {
222: // fetched the wrong page or network error...
223: test(null);
224: }
225: }
226:
227: var client = new XMLHttpRequest();
228: client.onreadystatechange = handler;
229: client.open("GET", "test.xml");
1.60 avankest 230: client.send();</code></pre>
1.18 avankest 231:
1.58 avankest 232: <p>If you just want to log a message to the server:</p>
1.18 avankest 233:
1.60 avankest 234: <pre><code>function log(message) {
1.18 avankest 235: var client = new XMLHttpRequest();
1.58 avankest 236: client.open("POST", "/log");
1.59 avankest 237: client.setRequestHeader("Content-Type", "text/plain;charset=UTF-8");
1.18 avankest 238: client.send(message);
1.60 avankest 239: }</code></pre>
1.18 avankest 240:
241: <p>Or if you want to check the status of a document on the server:</p>
242:
1.60 avankest 243: <pre><code>function fetchStatus(address) {
1.18 avankest 244: var client = new XMLHttpRequest();
245: client.onreadystatechange = function() {
246: // in case of network errors this might not give reliable results
247: if(this.readyState == 4)
248: returnStatus(this.status);
249: }
250: client.open("HEAD", address);
251: client.send();
1.60 avankest 252: }</code></pre>
1.18 avankest 253: </div>
1.2 avankest 254:
1.31 avankest 255: <h3 id=conformance><span class=secno>1.2. </span>Conformance</h3>
1.2 avankest 256:
1.29 avankest 257: <p>Everything in this specification is normative except for diagrams,
1.2 avankest 258: examples, notes and sections marked non-normative.
259:
1.25 avankest 260: <p>The key words <em class=ct>must</em>, <em class=ct>must not</em>, <em
1.75 avankest 261: class=ct>should</em> and <em class=ct>may</em> in this document are to be
262: interpreted as described in RFC 2119. [<cite><a
263: href="#RFC2119">RFC2119</a></cite>]
1.2 avankest 264:
265: <p>This specification defines the following classes of products:
266:
267: <dl>
1.75 avankest 268: <dt><dfn id=conforming-user-agent>Conforming user agent</dfn>
1.2 avankest 269:
1.75 avankest 270: <dd>
271: <p>A user agent <em class=ct>must</em> behave as described in this
1.107 avankest 272: specification in order to be considered conformant.</p>
1.75 avankest 273:
1.95 avankest 274: <p>If the user agent does not support XML (including support for
275: namespaces) the <a href="#xml-response-entity-body">XML response entity
276: body</a> <em class=ct>must</em> (always) be <code>null</code>.</p>
277:
1.76 avankest 278: <p>User agents <em class=ct>may</em> optimize any algorithm given in this
279: specification, so long as the end result is indistinguishable from the
280: result that would be obtained by the specification's algorithms. (The
281: algorithms in this specification are generally written with more concern
282: for clarity than efficiency.)</p>
1.2 avankest 283:
1.96 avankest 284: <p class=note>This specification uses both the terms "conforming user
285: agent(s)" and "user agent(s)" to refer to this product class.</p>
286:
1.95 avankest 287: <dt><dfn id=conforming-xml-user-agent>Conforming XML user agent</dfn>
288:
289: <dd>
290: <p>A user agent that is a <a href="#conforming-user-agent">conforming
291: user agent</a> and also supports XML (including support for namespaces).
1.2 avankest 292: </dl>
293:
1.32 avankest 294: <h4 id=dependencies><span class=secno>1.2.1. </span>Dependencies</h4>
1.2 avankest 295:
1.31 avankest 296: <p>This specification relies on several underlying specifications.
1.2 avankest 297:
1.31 avankest 298: <dl>
299: <dt>DOM
1.2 avankest 300:
1.31 avankest 301: <dd>
1.96 avankest 302: <p><a href="#conforming-user-agent" title="Conforming user
303: agent">Conforming user agents</a> <em class=ct>must</em> support some
304: version of DOM Events and DOM Core, because this specification uses some
305: of the features defined in those specifications. [<cite><a
306: href="#DOM3EV">DOM3Events</a></cite>] [<cite><a
307: href="#DOM3">DOM3Core</a></cite>]</p>
308:
309: <p>It <em class=ct>must</em> also support some version of the Window
310: Object because some of the functionality in this specification relies on
311: it. [<cite><a href="#ref-window">Window</a></cite>]</p>
1.2 avankest 312:
1.31 avankest 313: <dt>HTTP
1.11 avankest 314:
1.31 avankest 315: <dd>
1.96 avankest 316: <p><a href="#conforming-user-agent" title="Conforming user
317: agent">Conforming user agents</a> <em class=ct>must</em> support some
318: version of the HTTP protocol. The user agent <em class=ct>should</em>
319: support any HTTP method that matches the <a
320: href="#method"><code>Method</code> production</a> and <em
321: class=ct>must</em> at least support the following methods:</p>
1.81 avankest 322:
1.60 avankest 323: <ul>
324: <li><code>GET</code>
325:
326: <li><code>POST</code>
327:
328: <li><code>HEAD</code>
329:
330: <li><code>PUT</code>
331:
332: <li><code>DELETE</code>
333:
334: <li><code>OPTIONS</code>
335: </ul>
336:
337: <p>Other requirements regarding HTTP are made throughout the
1.41 avankest 338: specification. [<cite><a href="#RFC2616">RFC2616</a></cite>]</p>
1.43 avankest 339:
340: <dt>XML
341:
342: <dd>
1.96 avankest 343: <p><a href="#conforming-xml-user-agent" title="Conforming XML user
344: agent">Conforming XML user agents</a> <em class=ct>must</em> support XML
345: (including support for namespaces). [<cite><a
346: href="#ref-xml">XML</a></cite>] [<cite><a
347: href="#ref-xmlns">XMLNS</a></cite>]
1.31 avankest 348: </dl>
1.2 avankest 349:
1.81 avankest 350: <h4 id=terminology><span class=secno>1.2.2. </span>Terminology</h4>
351:
352: <p>There is a <dfn id=case-insensitive-match>case-insensitive match</dfn>
1.102 avankest 353: of strings <var>s1</var> and <var>s2</var> if after uppercasing both
1.101 avankest 354: strings (by mapping a-z to A-Z) they are identical.
1.2 avankest 355:
1.81 avankest 356: <h4 id=extensibility><span class=secno>1.2.3. </span>Extensibility</h4>
1.2 avankest 357:
1.82 avankest 358: <p>Extensions of the API defined by this specification are <em>strongly
1.31 avankest 359: discouraged</em>. User agents, Working Groups and other interested parties
1.35 avankest 360: should discuss extensions on a relevant public forum, preferably <a
1.31 avankest 361: href="mailto:public-webapi@w3.org">public-webapi@w3.org</a>.
1.2 avankest 362:
1.25 avankest 363: <h2 id=xmlhttprequest><span class=secno>2. </span>The <code
1.16 avankest 364: title="">XMLHttpRequest</code> Object</h2>
1.2 avankest 365:
1.60 avankest 366: <p>The <code><a href="#xmlhttprequest-object">XMLHttpRequest</a></code>
367: object can be used by scripts to programmatically connect to their
368: originating server via HTTP.
1.2 avankest 369:
370: <p>Objects implementing the <code><a
1.60 avankest 371: href="#xmlhttprequest-object">XMLHttpRequest</a></code> interface <em
372: class=ct>must</em> also implement the <code>EventTarget</code> interface.
373: [<cite><a href="#DOM3EV">DOM3Events</a></cite>]
374:
375: <p>Objects implementing the <code title="">Window</code> interface <em
376: class=ct>must</em> provide an <code title="">XMLHttpRequest()</code>
377: constructor. [<cite><a href="#ref-window">Window</a></cite>]
1.2 avankest 378:
1.25 avankest 379: <div class=example>
1.60 avankest 380: <p>In ECMAScript this can be used as follows:</p>
381: <!-- [<cite><span>ECMAScript</span></cite>] -->
382: <pre><code>var client = new XMLHttpRequest();</code></pre>
1.1 avankest 383: </div>
1.2 avankest 384:
1.60 avankest 385: <p>When the <code title="">XMLHttpRequest()</code> constructor is invoked a
386: persistent pointer to the associated <code title="">Window</code> object
387: <em class=ct>must</em> be stored on the newly created object. This is the
388: <dfn id=window-pointer title="Window pointer"><code>Window</code>
389: pointer</dfn>. The associated <code title="">Window</code> object is the
390: one of which the <code title="">XMLHttpRequest</code> constructor was
391: invoked. This <a href="#window-pointer" title="Window pointer">pointer</a>
392: <em class=ct>must</em> persist even if the browsing context in which the
393: <code title="">Window</code> is located is destroyed (by removing it from
394: a parent browsing context, for instance).
1.29 avankest 395:
396: <p>The term browsing context is defined by the <cite>Window Object
1.39 avankest 397: 1.0</cite> specification. [<cite><a href="#ref-window">Window</a></cite>]</p>
1.29 avankest 398: <!-- XXX if the document object changes in the browsing context you get an
1.35 avankest 399: exception in some implementations. -->
1.2 avankest 400:
1.60 avankest 401: <div class=example>
1.66 avankest 402: <p>If <var><code>win</code></var> is a <code title="">Window</code> object
403: <var><code>client</code></var> will have a pointer to
404: <var><code>win</code></var> in the following example:</p>
1.60 avankest 405:
1.66 avankest 406: <pre><code>var client = new win.XMLHttpRequest()</code></pre>
1.60 avankest 407: </div>
1.11 avankest 408:
1.60 avankest 409: <pre
410: class=idl>interface <dfn id=xmlhttprequest-object>XMLHttpRequest</dfn> {
411: // event handler
1.71 avankest 412: attribute EventListener <a href="#dfn-onreadystatechange">onreadystatechange</a>;
1.60 avankest 413:
414: // state
1.72 avankest 415: const unsigned short <a href="#unsent" title="UNSENT state">UNSENT</a> = 0;
1.60 avankest 416: const unsigned short <a href="#open" title="OPEN state">OPEN</a> = 1;
417: const unsigned short <a href="#sent" title="SENT state">SENT</a> = 2;
1.87 avankest 418: const unsigned short <a href="#loading" title="LOADING state">LOADING</a> = 3;
1.80 avankest 419: const unsigned short <a href="#done" title="DONE state">DONE</a> = 4;
1.71 avankest 420: readonly attribute unsigned short <a href="#dfn-readystate">readyState</a>;
1.60 avankest 421:
422: // request
1.71 avankest 423: void <a href="#dfn-open">open</a>(in DOMString <var>method</var>, in DOMString <var>url</var>);
424: void <a href="#dfn-open">open</a>(in DOMString <var>method</var>, in DOMString <var>url</var>, in boolean <var>async</var>);
425: void <a href="#dfn-open">open</a>(in DOMString <var>method</var>, in DOMString <var>url</var>, in boolean <var>async</var>, in DOMString <var>user</var>);
426: void <a href="#dfn-open">open</a>(in DOMString <var>method</var>, in DOMString <var>url</var>, in boolean <var>async</var>, in DOMString <var>user</var>, in DOMString <var>password</var>);
427: void <a href="#dfn-setrequestheader">setRequestHeader</a>(in DOMString <var>header</var>, in DOMString <var>value</var>);
428: void <a href="#dfn-send">send</a>();
429: void <a href="#dfn-send">send</a>(in DOMString <var>data</var>);
430: void <a href="#dfn-send">send</a>(in Document <var>data</var>);
431: void <a href="#dfn-abort">abort</a>();
1.60 avankest 432:
433: // response
1.71 avankest 434: DOMString <a href="#dfn-getallresponseheaders">getAllResponseHeaders</a>();
435: DOMString <a href="#dfn-getresponseheader">getResponseHeader</a>(in DOMString <var>header</var>);
436: readonly attribute DOMString <a href="#dfn-responsetext">responseText</a>;
437: readonly attribute Document <a href="#dfn-responsexml">responseXML</a>;
438: readonly attribute unsigned short <a href="#dfn-status">status</a>;
439: readonly attribute DOMString <a href="#dfn-statustext">statusText</a>;
1.5 avankest 440: };</pre>
1.2 avankest 441:
1.60 avankest 442: <p>The <code><a href="#xmlhttprequest-object">XMLHttpRequest</a></code>
1.72 avankest 443: object can be in five states: <a href="#unsent" title="UNSENT
444: state">UNSENT</a>, <a href="#open" title="OPEN state">OPEN</a>, <a
1.87 avankest 445: href="#sent" title="SENT state">SENT</a>, <a href="#loading"
446: title="LOADING state">LOADING</a> and <a href="#done" title="DONE
1.80 avankest 447: state">DONE</a>. The current state is exposed through the <code><a
1.72 avankest 448: href="#dfn-readystate">readyState</a></code> attribute. The method
449: definitions below define when a state transition takes place.
1.60 avankest 450:
451: <p>When constructed, the <code><a
452: href="#xmlhttprequest-object">XMLHttpRequest</a></code> object <em
1.72 avankest 453: class=ct>must</em> be in the UNSENT state. This state is represented by
454: the <dfn id=unsent title="UNSENT state"><code>UNSENT</code></dfn>
455: constant, whose value is <code>0</code>.
1.60 avankest 456:
457: <p>The OPEN state is the state of the object when the <code><a
458: href="#dfn-open">open()</a></code> method has been successfully invoked.
1.93 avankest 459: During this state request headers can be set using <code><a
1.60 avankest 460: href="#dfn-setrequestheader">setRequestHeader()</a></code> and the request
461: can be made using <code><a href="#dfn-send">send()</a></code>. This state
462: is represented by the <dfn id=open title="OPEN
463: state"><code>OPEN</code></dfn> constant, whose value is <code>1</code>.
464:
1.88 avankest 465: <p>During the OPEN state there is a <dfn id=send-flag><code>send()</code>
1.105 avankest 466: flag</dfn> which can be either "true" or "false". The initial value of the
467: <code title="">send()</code> flag is "false".
1.88 avankest 468:
1.60 avankest 469: <p>The SENT state is the state of the object when the user agent
470: successfully acknowledged the request. This state is represented by the
471: <dfn id=sent title="SENT state"><code>SENT</code></dfn> constant, whose
472: value is <code>2</code>.
473:
1.87 avankest 474: <p>The LOADING state is the state of the object when all HTTP headers have
475: been received. The object typically remains in this state until the
1.60 avankest 476: complete message body (if any) has been received. This state is
1.87 avankest 477: represented by the <dfn id=loading title="LOADING
478: state"><code>LOADING</code></dfn> constant, whose value is <code>3</code>.
1.60 avankest 479:
1.80 avankest 480: <p>The DONE state is the state of the object when either the data transfer
481: has been completed or something went wrong during the transfer (infinite
482: redirects for instance). This state is represented by the <dfn id=done
483: title="DONE state"><code>DONE</code></dfn> constant, whose value is
484: <code>4</code>.
1.60 avankest 485:
1.89 avankest 486: <p>The <dfn id=response-entity-body>response entity body</dfn> is the
487: fragment of the <a href="#dfn-entity-body">entity body</a> received so far
488: (LOADING state) or the complete entity body (DONE state). If there is no
489: entity body the response entity body is "null".
490:
491: <p>The <dfn id=text-response-entity-body>text response entity body</dfn> is
1.108 avankest 492: either a <code>DOMString</code> representing the <a
493: href="#response-entity-body">response entity body</a> or
494: <code>null</code>. The value of the text response entity body <em
495: class=ct>must</em> be determined by running the following algorithm:
1.89 avankest 496:
497: <ol>
1.91 avankest 498: <li>
1.108 avankest 499: <p>If the response entity body is "null" return <code>null</code> and
500: terminate these steps.</p>
1.91 avankest 501:
502: <li>
1.114 avankest 503: <p>Let <var>charset</var> be "null".
1.112 avankest 504:
505: <li>
1.91 avankest 506: <p>If there is no <code>Content-Type</code> header or there is a
507: <code>Content-Type</code> header which contains a MIME type that is
1.92 avankest 508: <code>text/xml</code>, <code>application/xml</code>,
509: <code>text/xsl</code> or ends in <code title="">+xml</code> (ignoring
510: any parameters) use the rules set forth in the XML specification to
1.114 avankest 511: determine the character encoding. Let <var>charset</var> be the
1.92 avankest 512: determined character encoding.
1.91 avankest 513:
514: <li>
515: <p>If the <code>Content-Type</code> MIME type contains a
1.114 avankest 516: <code>charset</code> parameter let <var>charset</var> be the value of
517: that parameter.
1.112 avankest 518:
519: <li> <!-- This stuff is copied from HTML5. Thanks Hixie! -->
1.114 avankest 520: <p>If <var>charset</var> is "null" then, for each of the rows in the
521: following table, starting with the first one and going down, if the
522: start of the entity body (<var>bytes</var>) is equal to or greater than
523: the number of bytes in the first column, and the first bytes of
524: <var>bytes</var> match the bytes given in the first column, then let
525: <var>charset</var> be the encoding given in the cell in the second
526: column of that row. When an encoding is determined or when no encoding
527: is determined go to the next step:</p>
1.112 avankest 528:
529: <table>
530: <thead>
531: <tr>
532: <th>Bytes in Hexadecimal
533:
534: <th>Description
535:
536: <tbody>
537: <tr>
538: <td>00 00 FE FF
539:
540: <td>UTF-32BE BOM
541:
542: <tr>
543: <td>FF FE 00 00
544:
545: <td>UTF-32LE BOM
546:
547: <tr>
548: <td>FE FF
549:
550: <td>UTF-16BE BOM
551:
552: <tr>
553: <td>FF FE
554:
555: <td>UTF-16LE BOM
556:
557: <tr>
558: <td>EF BB BF
559:
560: <td>UTF-8 BOM<!-- nobody uses this
561: <tr>
562: <td>DD 73 66 73
563: <td>UTF-EBCDIC
564: -->
565:
566: </table>
567:
568: <li>
1.114 avankest 569: <p>If <var>charset</var> is "null" let <var>charset</var> be UTF-8.
1.91 avankest 570:
571: <li>
1.108 avankest 572: <p>Return the result of decoding the response entity body using
1.97 avankest 573: <var>charset</var>. Or, if that fails, return <code>null</code>.
1.89 avankest 574: </ol>
575:
1.108 avankest 576: <p>The <dfn id=xml-response-entity-body>XML response entity body</dfn> is
577: either a <code>Document</code> representing the <a
578: href="#response-entity-body">response entity body</a> or <code>null</code>
579: and is determined by running the following algorithm (the return value is
580: its value):
1.89 avankest 581:
582: <ol>
1.91 avankest 583: <li>
1.108 avankest 584: <p>If the response entity body is "null" terminate these steps and return
585: <code>null</code>.
1.89 avankest 586:
587: <li>
1.104 avankest 588: <p>If a <code>Content-Type</code> is present and it does not contain a
589: MIME type (ignoring any parameters) that is <code>text/xml</code>,
1.92 avankest 590: <code>application/xml</code>, <code>text/xsl</code> or ends in <code
1.97 avankest 591: title="">+xml</code> terminate these steps and return <code>null</code>.
1.100 avankest 592: (Do not terminate these steps if there is no <code>Content-Type</code>
593: header at all.)
1.89 avankest 594:
595: <li>
1.108 avankest 596: <p>Parse the response entity body following the rules from the XML
597: specifications. Let the result be <var>parsed document</var>. If this
598: fails (unsupported character encoding, namespace well-formedness error
599: et cetera) terminate these steps return <code>null</code>. [<cite><a
1.97 avankest 600: href="#ref-xml">XML</a></cite>] [<cite><a
1.89 avankest 601: href="#ref-xmlns">XMLNS</a></cite>]
602:
603: <li>
1.97 avankest 604: <p>Return an object implementing the <code>Document</code> interface
605: representing the <var>parsed document</var>.
1.89 avankest 606: </ol>
607:
1.6 avankest 608: <dl>
1.25 avankest 609: <dt><dfn id=dfn-onreadystatechange><code>onreadystatechange</code></dfn>
1.2 avankest 610: of type <code>EventListener</code>
611:
612: <dd>
613: <p>An attribute that takes an <code>EventListener</code> as value that
1.60 avankest 614: <em class=ct>must</em> be invoked along with any other appropriate event
615: listeners that are registered on this object when a <code><a
616: href="#dfn-readystatechange">readystatechange</a></code> event is
1.88 avankest 617: dispatched on it during the bubbling phase. Its initial value <em
618: class=ct>must</em> be <code>null</code>.</p>
1.2 avankest 619:
1.25 avankest 620: <dt><dfn id=dfn-readystate><code>readyState</code></dfn> of type
1.2 avankest 621: <code>unsigned short</code>, readonly
622:
623: <dd>
1.60 avankest 624: <p>The attribute <em class=ct>must</em> be the value of the constant
625: corresponding to the object's current state.</p>
1.2 avankest 626:
1.60 avankest 627: <dt><dfn id=dfn-open title=open><code>open(<var>method</var>,
628: <var>url</var>, <var>async</var>, <var>user</var>,
629: <var>password</var>)</code></dfn>, method
1.2 avankest 630:
1.60 avankest 631: <dd>
632: <p>When invoked, the user agent <em class=ct>must</em> follow the
1.97 avankest 633: following steps (unless otherwise indicated):</p>
1.2 avankest 634:
1.60 avankest 635: <ol>
636: <li>
1.98 avankest 637: <p>If the <var>method</var> argument does not match the <dfn
1.60 avankest 638: id=method><code>Method</code> production</dfn> defined in section
1.99 avankest 639: 5.1.1 of RFC 2616 raise a <code>SYNTAX_ERR</code> exception and
640: terminate these steps. [<cite><a href="#RFC2616">RFC2616</a></cite>]
1.2 avankest 641:
1.60 avankest 642: <li>
643: <p>If the given <var>method</var> is not supported for security reasons
644: the user agent <em class=ct>should</em> raise a
1.99 avankest 645: <code>SECURITY_ERR</code> exception and terminate these steps.
1.2 avankest 646:
1.60 avankest 647: <li>
648: <p>Let <var>stored method</var> be <var>method</var>.
1.2 avankest 649:
1.60 avankest 650: <li>
1.81 avankest 651: <p>If <var>method</var> <a href="#case-insensitive-match"
652: title="case-insensitive match">case-insensitively matches</a>
653: <code>GET</code>, <code>POST</code>, <code>HEAD</code>,
1.97 avankest 654: <code>PUT</code>, <code>DELETE</code> or <code>OPTIONS</code> convert
655: it to its uppercase equivalent (by mapping a-z to A-Z) and let
656: <var>stored method</var> be the result.
1.69 avankest 657: </li>
658: <!-- WebKit (and supposedly Firefox) also uppercase: CONNECT, COPY,
659: INDEX, LOCK, M-POST, MKCOL, MOVE, PROPFIND, PROPPATCH, TRACE and UNLOCK.
660: Not sure if TRACE and CONNECT are worth it though. They raise a
661: SECURITY_ERR exception anyway... -->
1.2 avankest 662:
1.60 avankest 663: <li>
664: <p>Drop the fragment identifier (if any) from <var>url</var> and let
665: <var>stored url</var> be the result of that operation.
1.2 avankest 666:
1.60 avankest 667: <li>
1.97 avankest 668: <p>If <var>stored url</var> is a relative reference resolve it using
669: the current value of the <code>baseURI</code> attribute of the
670: <code>Document</code> object currently associated with the <a
1.60 avankest 671: href="#window-pointer"><code>Window</code> pointer</a>. If this fails
1.99 avankest 672: raise a <code>SYNTAX_ERR</code> exception and terminate these steps.
1.2 avankest 673:
1.60 avankest 674: <li>
1.102 avankest 675: <p>If <var>stored url</var> contains an unsupported scheme raise a
676: <code>NOT_SUPPORTED_ERR</code> and terminate these steps.
677:
678: <li>
1.60 avankest 679: <p>If the <code>"user:password"</code> format in the
680: <code>userinfo</code> production defined in section 3.2.1 of RFC 3986
681: is not supported for the relevant scheme and <var>stored url</var>
1.99 avankest 682: contains this format raise a <code>SYNTAX_ERR</code> and terminate
683: these steps. [<cite><a href="#ref-rfc3986">RFC3986</a></cite>]
1.2 avankest 684:
1.60 avankest 685: <li>
686: <p>If <var>stored url</var> contains the <code>"user:password"</code>
687: format let <var>stored user</var> be the user part and <var>stored
688: password</var> be the password part.
1.2 avankest 689:
1.60 avankest 690: <li>
691: <p>If <var>stored url</var> just contains the <code>"user"</code>
692: format let <var>stored user</var> be the user part.
1.24 avankest 693:
1.60 avankest 694: <li>
695: <p>If <var>stored url</var> is non same-origin the user agent <em
696: class=ct>should</em> raise a <code>SECURITY_ERR</code> exception and
1.99 avankest 697: terminate these steps.</p>
1.70 avankest 698:
699: <p class=note>This specification does not define what constitutes as
1.103 avankest 700: non same-origin. It is expected that what constiutes as non
701: same-origin will be defined before this specification eventually
702: reaches the W3C Recommendation status by way of referencing a
703: specification that defines it.<!-- XXX reference HTML5? --></p>
1.60 avankest 704:
705: <li>
706: <p>Let <var>async</var> be the value of the <var>async</var> argument
1.103 avankest 707: or <code>true</code> if it was omitted.
1.60 avankest 708:
709: <li>
710: <p>If the <var>user</var> argument was not omitted and its syntax does
1.97 avankest 711: not match that specified by the relevant authentication scheme raise a
1.99 avankest 712: <code>SYNTAX_ERR</code> exception and terminate these steps.
1.60 avankest 713:
714: <li>
715: <p>If the <var>user</var> argument was not omitted and is not
716: <code>null</code> let <var>stored user</var> be <var>user</var>
717: encoded using the encoding specified in the relevant authentication
718: scheme or UTF-8 if the scheme fails to specify an encoding.</p>
1.2 avankest 719:
1.60 avankest 720: <p class=note>This step overrides any user that may have been set by
721: the <var>url</var> argument.</p>
1.17 avankest 722:
1.60 avankest 723: <li>
724: <p>If the <var>user</var> argument was not omitted and is
725: <code>null</code> remove <var>stored user</var>.
1.17 avankest 726:
1.60 avankest 727: <li>
728: <p>If the <var>password</var> argument was not omitted and its syntax
729: does not match that specified by the relevant authentication scheme
1.99 avankest 730: raise a <code>SYNTAX_ERR</code> exception and terminate these steps.
1.17 avankest 731:
1.60 avankest 732: <li>
733: <p>If the <var>password</var> argument was not omitted and is not
734: <code>null</code> let <var>stored password</var> be
735: <var>password</var> encoded using the encoding specified in the
736: relevant authentication scheme or UTF-8 if the scheme fails to specify
737: an encoding.
1.17 avankest 738:
1.60 avankest 739: <li>
740: <p>If the <var>password</var> argument was not omitted and is
741: <code>null</code> remove <var>stored password</var>.
1.17 avankest 742:
1.60 avankest 743: <li>
1.109 avankest 744: <p><a href="#abort-send-algorithm" title="abort send()">Abort the
745: <code>send()</code> algorithm</a>, set <a
746: href="#response-entity-body">response entity body</a> to "null" and
747: reset the list of request headers.
1.17 avankest 748:
1.60 avankest 749: <p>
1.44 avankest 750:
1.60 avankest 751: <li>
1.109 avankest 752: <p>The user agent <em class=ct>should</em> cancel any network activity
753: for which the object is responsible.
1.60 avankest 754: </li>
755: <!-- we can hardly require it... -->
1.22 avankest 756:
1.60 avankest 757: <li>
758: <p>Switch the object to the <a href="#open" title="OPEN state">OPEN</a>
1.106 avankest 759: state, set the <a href="#send-flag"><code>send()</code> flag</a> to
1.105 avankest 760: "false" and then synchronously dispatch a <code><a
1.60 avankest 761: href="#dfn-readystatechange">readystatechange</a></code> event on the
1.97 avankest 762: object and return the method call.
1.60 avankest 763: </ol>
1.24 avankest 764:
1.25 avankest 765: <p class=note>A future version or extension of this specification will
1.35 avankest 766: most likely define a way of doing cross-site requests.</p>
1.26 avankest 767:
1.25 avankest 768: <dt><dfn id=dfn-setrequestheader
769: title=setrequestheader><code>setRequestHeader(<var>header</var>,
1.18 avankest 770: <var>value</var>)</code></dfn>, method
1.6 avankest 771:
772: <dd>
1.47 avankest 773: <p>Each request has a list of request headers with associated values.
774: This method can be used to manipulate those values and set new request
775: headers.</p>
776:
1.60 avankest 777: <p>When invoked, the user agent <em class=ct>must</em> follow the
1.97 avankest 778: following steps (unless otherwise indicated):</p>
1.60 avankest 779:
780: <ol>
781: <li>
782: <p>If the state of the object is not <a href="#open" title="OPEN
1.97 avankest 783: state">OPEN</a> raise an <code>INVALID_STATE_ERR</code> exception and
1.99 avankest 784: terminate these steps.
1.6 avankest 785:
1.60 avankest 786: <li>
1.104 avankest 787: <p>If the <a href="#send-flag"><code>send()</code> flag</a> is "true"
1.99 avankest 788: raise an <code>INVALID_STATE_ERR</code> exception and terminate these
1.97 avankest 789: steps.
1.60 avankest 790:
791: <li>
1.98 avankest 792: <p>If the <var>header</var> argument does not match the <dfn
1.60 avankest 793: id=field-name><code>field-name</code> production</dfn> as defined by
1.97 avankest 794: section 4.2 of RFC 2616 or is <code>null</code> raise a
1.99 avankest 795: <code>SYNTAX_ERR</code> exception and terminate these steps. [<cite><a
1.97 avankest 796: href="#RFC2616">RFC2616</a></cite>]
1.71 avankest 797:
798: <li>
1.99 avankest 799: <p>If the <var>value</var> argument is <code>null</code> terminate
800: these steps. (Do not raise an exception.)
1.71 avankest 801: </li>
802: <!-- undefined is to be treated as null here... -->
1.60 avankest 803:
804: <li>
1.98 avankest 805: <p>If the <var>value</var> argument does not match the <dfn
1.60 avankest 806: id=field-value><code>field-value</code> production</dfn> as defined by
1.99 avankest 807: section 4.2 of RFC 2616 raise a <code>SYNTAX_ERR</code> and terminate
1.97 avankest 808: these steps. [<cite><a href="#RFC2616">RFC2616</a></cite>]
1.60 avankest 809:
810: <li>
1.99 avankest 811: <p>For security reasons these steps <em class=ct>should</em> be
812: terminated if the <var>header</var> argument <a
813: href="#case-insensitive-match" title="case-insensitive
814: match">case-insensitively matches</a> one of the following headers:</p>
1.34 avankest 815:
816: <ul>
817: <li><code>Accept-Charset</code>
818:
819: <li><code>Accept-Encoding</code>
820:
1.69 avankest 821: <li><code>Connection</code>
822:
1.34 avankest 823: <li><code>Content-Length</code>
824:
1.69 avankest 825: <li><code>Content-Transfer-Encoding</code>
826:
827: <li><code>Date</code>
828:
1.34 avankest 829: <li><code>Expect</code>
830:
831: <li><code>Host</code>
832:
833: <li><code>Keep-Alive</code>
834:
835: <li><code>Referer</code>
836:
837: <li><code>TE</code>
838:
839: <li><code>Trailer</code>
840:
841: <li><code>Transfer-Encoding</code>
842:
843: <li><code>Upgrade</code>
1.69 avankest 844:
845: <li><code>Via</code>
1.34 avankest 846: </ul>
1.6 avankest 847:
1.60 avankest 848: <li>
849: <p>If the <var>header</var> argument is not in the list of request
1.97 avankest 850: headers append the <var>header</var> with its associated
1.99 avankest 851: <var>value</var> to the list and terminate these steps.
1.46 avankest 852:
1.60 avankest 853: <li>
854: <p>If the <var>header</var> argument is in the list of request headers
1.97 avankest 855: either use multiple headers, combine the values or use a combination
856: of those (section 4.2, RFC 2616). [<cite><a
857: href="#RFC2616">RFC2616</a></cite>]
858: </li>
859: <!-- XXX it seems UAs always combine the values -->
1.60 avankest 860: </ol>
1.18 avankest 861:
1.47 avankest 862: <p class=note>See also the <code><a href="#dfn-send">send()</a></code>
863: method regarding user agent header handling for caching, authentication,
864: proxies, and cookies.</p>
865:
1.25 avankest 866: <div class=example>
1.60 avankest 867: <pre><code>// The following script:
1.18 avankest 868: var client = new XMLHttpRequest();
869: client.open('GET', 'demo.cgi');
870: client.setRequestHeader('X-Test', 'one');
871: client.setRequestHeader('X-Test', 'two');
872: client.send();
873:
874: // ...would result in the following header being sent:
875: ...
876: X-Test: one, two
1.60 avankest 877: ...</code></pre>
1.18 avankest 878: </div>
1.6 avankest 879:
1.25 avankest 880: <dt><dfn id=dfn-send title=send><code>send(<var>data</var>)</code></dfn>,
881: method
1.2 avankest 882:
883: <dd>
1.60 avankest 884: <p>The <code><a href="#dfn-send">send()</a></code> method initiates the
1.107 avankest 885: request and its optional argument provides the <a
886: href="#dfn-entity-body">entity body</a>. Authors are strongly encouraged
887: to ensure that they have specified the <code>Content-Type</code> header
888: via <code><a href="#dfn-setrequestheader">setRequestHeader()</a></code>
889: before invoking <code><a href="#dfn-send">send()</a></code> with a
890: non-<code>null</code> <var>data</var> argument.</p>
1.60 avankest 891:
892: <p>When invoked, the user agent <em class=ct>must</em> follow the
1.109 avankest 893: following steps (unless otherwise noted). Note that this algorithm might
1.110 avankest 894: get aborted if the <code><a href="#dfn-open">open()</a></code> or
895: <code><a href="#dfn-abort">abort()</a></code> is invoked. When the <dfn
896: id=abort-send-algorithm title="abort send()"><code>send()</code>
1.111 avankest 897: algorithm is aborted</dfn> the user agent <em class=ct>must</em>
898: terminate the algorithm after finishing the step it is on.</p>
1.109 avankest 899:
900: <p class=note>The following algorithm can not be aborted through script
901: when <var>async</var> is <code>false</code>. It can only be aborted when
902: <var>async</var> is <code>true</code> and only after the method call has
903: returned.</p>
1.60 avankest 904:
905: <ol>
906: <li>
907: <p>If the state of the object is not <a href="#open" title="OPEN
1.97 avankest 908: state">OPEN</a> raise an <code>INVALID_STATE_ERR</code> exception and
1.99 avankest 909: terminate these steps.
1.60 avankest 910:
911: <li>
1.104 avankest 912: <p>If the <a href="#send-flag"><code>send()</code> flag</a> is "true"
1.99 avankest 913: raise an <code>INVALID_STATE_ERR</code> exception and terminate these
1.97 avankest 914: steps.
1.60 avankest 915:
916: <li>
1.104 avankest 917: <p>If <var>async</var> is <code>true</code> set the <a
918: href="#send-flag"><code>send()</code> flag</a> to "true".
1.103 avankest 919:
920: <li>
1.60 avankest 921: <p>If the <var>data</var> argument has not been omitted and is not
1.97 avankest 922: <code>null</code> use it for the <dfn id=dfn-entity-body>entity
923: body</dfn> as defined by section 7.2 of RFC 2616 observing the
924: following rules: [<cite><a href="#RFC2616">RFC2616</a></cite>]</p>
1.60 avankest 925:
926: <dl>
927: <dt><var>data</var> is a <code>DOMString</code>
928:
1.79 avankest 929: <dd>
1.97 avankest 930: <p>Encode <var>data</var> using UTF-8 for transmission.
1.60 avankest 931:
932: <dt><var>data</var> is a <code>Document</code>
933:
934: <dd>
1.97 avankest 935: <p>Serialize <var>data</var> into a namespace well-formed XML
936: document and encoded using the encoding given by
937: <code><var>data</var>.xmlEncoding</code>, if specified, or UTF-8
938: otherwise. Or, if this fails because the <code>Document</code>
939: cannot be serialized act as if <var>data</var> is <code>null</code>.</p>
940:
941: <p>If no <code>Content-Type</code> header is in the list of request
942: headers append it to the list of request headers with a value of
943: <code>application/xml</code>.</p>
1.60 avankest 944:
945: <p class=note>Subsequent changes to the <code>Document</code> have no
946: effect on what is submitted.</p>
947:
948: <dt><var>data</var> is not a <code>DOMString</code> or
949: <code>Document</code>
950:
1.79 avankest 951: <dd>
1.97 avankest 952: <p>Use the stringification mechanisms of the host language on
953: <var>data</var> and treat the result as if <var>data</var> is a
954: <code>DOMString</code>. Or, if this fails, act as if <var>data</var>
955: is <code>null</code>.
1.60 avankest 956: </dl>
957:
958: <p>If the data argument has been omitted or is <code>null</code> no
1.97 avankest 959: entity body is used in the request.</p>
1.60 avankest 960:
961: <li>
1.72 avankest 962: <p>Make a request to <var>stored url</var>, using HTTP method
963: <var>stored method</var>, user <var>stored user</var> (if provided)
964: and password <var>stored password</var> (if provided), taking into
965: account the entity body, list of request headers and the rules listed
966: directly after this set of steps.
1.60 avankest 967:
968: <li>
1.97 avankest 969: <p>Synchronously dispatch a <code><a
970: href="#dfn-readystatechange">readystatechange</a></code> event on the
971: object.</p>
972:
973: <p class=note>The state of the object does not change. The event is
974: dispatched for historical reasons.</p>
1.68 avankest 975:
976: <li>
1.103 avankest 977: <p>If <var>async</var> is <code>true</code> return the <code><a
978: href="#dfn-send">send()</a></code> method call. (Do not terminate the
979: steps in the algorithm though.)
1.60 avankest 980:
981: <li>
1.83 avankest 982: <p>If the request has been successfully acknowledged synchronously
1.105 avankest 983: switch the state to <a href="#sent" title="SENT state">SENT</a>, set
984: the <a href="#send-flag"><code>send()</code> flag</a> to "false" and
1.97 avankest 985: then synchronously dispatch a <code><a
986: href="#dfn-readystatechange">readystatechange</a></code> event on the
987: object.
1.60 avankest 988:
989: <li>
1.102 avankest 990: <p>If all HTTP headers have been received, immediately before receiving
991: the message body (if any), synchronously switch the state to <a
992: href="#loading" title="LOADING state">LOADING</a> and then
1.97 avankest 993: synchronously dispatch a <code><a
1.60 avankest 994: href="#dfn-readystatechange">readystatechange</a></code> event on the
995: object.
996:
997: <li>
998: <p>If the response is an HTTP redirect (status code <code>301</code>,
1.97 avankest 999: <code>302</code>, <code>303</code> or <code>307</code>), transparently
1000: follow it (unless it violates security, infinite loop precautions or
1001: the scheme is not supported).</p>
1.60 avankest 1002:
1003: <p class=note>HTTP places requirements on the user agent regarding the
1004: preservation of the request method and entity body during redirects,
1005: and also requires users to be notified of certain kinds of automatic
1006: redirections.</p>
1007: <!-- Arguably HTTP should be fixed for the latter case. No browser
1008: follows that as far as I know. -->
1009:
1010:
1011: <li>
1.97 avankest 1012: <p>If something goes wrong (infinite loop, network errors) run the
1013: following set of steps:</p>
1.60 avankest 1014:
1015: <ol>
1016: <li>
1.97 avankest 1017: <p>Set <a href="#response-entity-body">response entity body</a> to
1018: "null" and reset the list of request headers.
1.60 avankest 1019:
1020: <li>
1.83 avankest 1021: <p>Synchronously switch the state to <a href="#done" title="DONE
1022: state">DONE</a>.
1.60 avankest 1023:
1024: <li>
1.97 avankest 1025: <p>If <var>async</var> is set to <code>false</code> raise a <code><a
1.100 avankest 1026: href="#network-err">NETWORK_ERR</a></code> exception and terminate
1027: the overall algorithm.
1.60 avankest 1028:
1029: <li>
1030: <p>Synchronously dispatch a <code><a
1031: href="#dfn-readystatechange">readystatechange</a></code> event on
1032: the object.
1033:
1034: <li>
1.99 avankest 1035: <p>Terminate the overall algorithm.
1.60 avankest 1036: </ol>
1037:
1.83 avankest 1038: <p class=note>It is likely that a future version of the <code><a
1039: href="#xmlhttprequest-object">XMLHttpRequest</a></code> object will
1040: dispatch an <code>error</code> event here as well.</p>
1.60 avankest 1041:
1042: <li>
1.83 avankest 1043: <p>When the request has successfully completed loading, synchronously
1.97 avankest 1044: switch the state to <a href="#done" title="DONE state">DONE</a> and
1045: then synchronously dispatch a <code><a
1046: href="#dfn-readystatechange">readystatechange</a></code> event on the
1047: object and return the method call in case of <var>async</var> being
1048: <code>false</code>.
1.60 avankest 1049: </ol>
1.19 avankest 1050:
1.92 avankest 1051: <p>If the user agent allows the user to configure a proxy it <em
1.25 avankest 1052: class=ct>should</em> modify the request appropriately; <abbr title="in
1.2 avankest 1053: other words">i.e.</abbr>, connect to the proxy host instead of the
1054: origin server, modify the <code>Request-Line</code> and send
1055: <code>Proxy-Authorization</code> headers as specified.</p>
1056:
1.44 avankest 1057: <p>If the user agent supports HTTP Authentication it <em
1058: class=ct>should</em> consider requests originating from this object to
1059: be part of the protection space that includes the accessed URIs and send
1.19 avankest 1060: <code>Authorization</code> headers and handle <code>401
1.73 avankest 1061: Unauthorised</code> requests appropriately. If authentication fails,
1.44 avankest 1062: user agents <em class=ct>should</em> prompt the users for credentials.
1063: [<cite><a href="#ref-rfc2617">RFC2617</a></cite>]</p>
1.19 avankest 1064:
1.59 avankest 1065: <p>If the user agent supports HTTP State Management it <em
1.44 avankest 1066: class=ct>should</em> persist, discard and send cookies (as received in
1067: the <code>Set-Cookie</code> and <code>Set-Cookie2</code> response
1068: headers, and sent in the <code>Cookie</code> header) as applicable.
1.51 avankest 1069: [<cite><a href="#ref-rfc2965">RFC2965</a></cite>]</p>
1.44 avankest 1070:
1071: <p>If the user agent implements a HTTP cache it <em class=ct>should</em>
1072: respect <code>Cache-Control</code> request headers set by the script
1073: (<abbr title="for example">e.g.</abbr>, <code>Cache-Control:
1074: no-cache</code> bypasses the cache). It <em class=ct>must not</em> send
1.25 avankest 1075: <code>Cache-Control</code> or <code>Pragma</code> request headers
1.44 avankest 1076: automatically unless the user explicitly requests such behaviour
1077: (<abbr>e.g.</abbr>, by (force-)reloading the page). <code>304 Not
1078: Modified</code> responses that are a result of a user agent generated
1079: conditional request <em class=ct>must</em> be presented as <code>200
1.59 avankest 1080: OK</code> responses with the appropriate content. The user agent <em
1.44 avankest 1081: class=ct>must</em> allow scripts to override automatic cache validation
1082: by setting request headers (e.g., <code>If-None-Match</code>,
1.16 avankest 1083: <code>If-Modified-Since</code>), in which case <code>304 Not
1.44 avankest 1084: Modified</code> responses <em class=ct>must</em> be passed through.
1085: [<cite><a href="#RFC2616">RFC2616</a></cite>]</p>
1.2 avankest 1086:
1.44 avankest 1087: <p>If the user agent implements server-driven content-negotiation it <em
1.25 avankest 1088: class=ct>should</em> set <code>Accept-Language</code>,
1.18 avankest 1089: <code>Accept-Encoding</code> and <code>Accept-Charset</code> headers as
1.25 avankest 1090: appropriate; it <em class=ct>must not</em> automatically set the
1.18 avankest 1091: <code>Accept</code> header. Responses to such requests <em
1.44 avankest 1092: class=ct>must</em> have the content-codings automatically decoded.
1093: [<cite><a href="#RFC2616">RFC2616</a></cite>]</p>
1.18 avankest 1094:
1.25 avankest 1095: <dt><dfn id=dfn-abort><code>abort()</code></dfn>, method
1.6 avankest 1096:
1097: <dd>
1.62 avankest 1098: <p>When invoked, the user agent <em class=ct>must</em> run the following
1.97 avankest 1099: steps (unless otherwise noted):</p>
1.6 avankest 1100:
1.62 avankest 1101: <ol>
1102: <li>
1.109 avankest 1103: <p><a href="#abort-send-algorithm" title="abort send()">Abort the
1104: <code>send()</code> algorithm</a>, set the <a
1105: href="#response-entity-body">response entity body</a> to "null", set
1106: the <a href="#send-flag"><code>send()</code> flag</a> to "false" and
1107: remove any registered request headers.
1.62 avankest 1108:
1109: <li>
1.109 avankest 1110: <p>The user agent <em class=ct>should</em> cancel any network activity
1111: for which the object is responsible.
1.62 avankest 1112:
1.80 avankest 1113: <li>
1.86 avankest 1114: <p>If the state is <a href="#unsent" title="UNSENT state">UNSENT</a>,
1.84 avankest 1115: <a href="#open" title="OPEN state">OPEN</a> and the <a
1.104 avankest 1116: href="#send-flag"><code>send()</code> flag</a> is "false", or <a
1.86 avankest 1117: href="#done" title="DONE state">DONE</a> go to the next step.</p>
1.84 avankest 1118:
1119: <p>Otherwise, switch the state to <a href="#done" title="DONE
1.97 avankest 1120: state">DONE</a> and synchronously dispatch a <code><a
1.84 avankest 1121: href="#dfn-readystatechange">readystatechange</a></code> event on the
1122: object.</p>
1.68 avankest 1123:
1.62 avankest 1124: <li>
1.72 avankest 1125: <p>Switch the state to <a href="#unsent" title="UNSENT
1.98 avankest 1126: state">UNSENT</a>. (Do not dispatch the <code><a
1.62 avankest 1127: href="#dfn-readystatechange">readystatechange</a></code> event.)</p>
1128:
1.83 avankest 1129: <p class=note>It is likely that a future version of the <code><a
1130: href="#xmlhttprequest-object">XMLHttpRequest</a></code> object will
1131: dispatch an <code title="">abort</code> event here as well.</p>
1.62 avankest 1132: </ol>
1.26 avankest 1133:
1.6 avankest 1134: <dt><dfn
1.25 avankest 1135: id=dfn-getallresponseheaders><code>getAllResponseHeaders()</code></dfn>,
1.13 avankest 1136: method
1.2 avankest 1137:
1138: <dd>
1.62 avankest 1139: <p>When invoked, the user agent <em class=ct>must</em> run the following
1140: steps:</p>
1.60 avankest 1141:
1142: <ol>
1.77 avankest 1143: <li>
1.87 avankest 1144: <p>If the state is not <a href="#loading" title="LOADING
1.97 avankest 1145: state">LOADING</a> or <a href="#done" title="DONE state">DONE</a>
1.99 avankest 1146: raise an <code>INVALID_STATE_ERR</code> exception and terminate these
1.97 avankest 1147: steps.
1.77 avankest 1148:
1149: <li>
1.97 avankest 1150: <p>Return all the HTTP headers, as a single string, with each header
1151: line separated by a U+000D CR U+000A LF pair excluding the status
1152: line.
1.60 avankest 1153: </ol>
1.6 avankest 1154:
1.25 avankest 1155: <div class=example>
1.60 avankest 1156: <pre><code>// The following script:
1.6 avankest 1157: var client = new XMLHttpRequest();
1.18 avankest 1158: client.open("GET", "test.txt", true);
1.6 avankest 1159: client.send();
1.16 avankest 1160: client.onreadystatechange = function() {
1.17 avankest 1161: if(this.readyState == 3) {
1.16 avankest 1162: print(this.getAllResponseHeaders());
1163: }
1164: }
1.6 avankest 1165:
1166: // ...should output something similar to the following text:
1167: Date: Sun, 24 Oct 2004 04:58:38 GMT
1168: Server: Apache/1.3.31 (Unix)
1169: Keep-Alive: timeout=15, max=99
1170: Connection: Keep-Alive
1171: Transfer-Encoding: chunked
1.60 avankest 1172: Content-Type: text/plain; charset=utf-8</code></pre>
1.6 avankest 1173: </div>
1174:
1.25 avankest 1175: <dt><dfn id=dfn-getresponseheader
1176: title=getresponseheader><code>getResponseHeader(<var>header</var>)</code></dfn>,
1.13 avankest 1177: method
1.2 avankest 1178:
1.6 avankest 1179: <dd>
1.60 avankest 1180: <p>When the method is invoked, the user agent <em class=ct>must</em> run
1181: the following steps:</p>
1182:
1183: <ol>
1.77 avankest 1184: <li>
1.87 avankest 1185: <p>If the state is not <a href="#loading" title="LOADING
1.97 avankest 1186: state">LOADING</a> or <a href="#done" title="DONE state">DONE</a>
1.99 avankest 1187: raise an <code>INVALID_STATE_ERR</code> exception and terminate these
1.97 avankest 1188: steps.
1.17 avankest 1189:
1.77 avankest 1190: <li>
1.98 avankest 1191: <p>If the <var>header</var> argument does not match the <a
1.97 avankest 1192: href="#field-name"><code>field-name</code> production</a> raise a
1.99 avankest 1193: <code>SYNTAX_ERR</code> exception and terminate these steps.
1.77 avankest 1194:
1195: <li>
1.81 avankest 1196: <p>If the <var>header</var> argument <a href="#case-insensitive-match"
1197: title="case-insensitive match">case-insensitively matches</a> multiple
1.97 avankest 1198: HTTP headers for the last request sent return the values of these
1199: headers as a single concatenated string separated from each other by
1.99 avankest 1200: an U+002C COMMA followed by an U+0020 SPACE and terminate these steps.
1.77 avankest 1201:
1202: <li>
1.81 avankest 1203: <p>If the <var>header</var> argument <a href="#case-insensitive-match"
1204: title="case-insensitive match">case-insensitively matches</a> a single
1.97 avankest 1205: HTTP header for the last request sent return the value of that header
1.99 avankest 1206: and terminate these steps.
1.77 avankest 1207:
1208: <li>
1.97 avankest 1209: <p>Return <code>null</code>.
1.60 avankest 1210: </ol>
1.17 avankest 1211:
1.25 avankest 1212: <div class=example>
1.60 avankest 1213: <pre><code>// The following script:
1.1 avankest 1214: var client = new XMLHttpRequest();
1.18 avankest 1215: client.open("GET", "test.txt", true);
1.6 avankest 1216: client.send();
1.16 avankest 1217: client.onreadystatechange = function() {
1.17 avankest 1218: if(this.readyState == 3) {
1.18 avankest 1219: print(client.getResponseHeader("Content-Type"));
1.16 avankest 1220: }
1221: }
1.1 avankest 1222:
1.6 avankest 1223: // ...should output something similar to the following text:
1.60 avankest 1224: Content-Type: text/plain; charset=utf-8</code></pre>
1.2 avankest 1225: </div>
1226:
1.25 avankest 1227: <dt><dfn id=dfn-responsetext><code>responseText</code></dfn> of type
1.9 avankest 1228: <code>DOMString</code>, readonly
1.6 avankest 1229:
1230: <dd>
1.89 avankest 1231: <p>On getting, the user agent <em class=ct>must</em> run the following
1232: steps:</p>
1233:
1234: <ol>
1235: <li>
1236: <p>If the state is not <a href="#loading" title="LOADING
1.97 avankest 1237: state">LOADING</a> or <a href="#done" title="DONE state">DONE</a>
1.99 avankest 1238: raise an <code>INVALID_STATE_ERR</code> exception and terminate these
1.97 avankest 1239: steps.
1.6 avankest 1240:
1.89 avankest 1241: <li>
1242: <p>Return the <a href="#text-response-entity-body">text response entity
1243: body</a>.
1244: </ol>
1.12 avankest 1245:
1.25 avankest 1246: <dt><dfn id=dfn-responsexml><code>responseXML</code></dfn> of type
1.9 avankest 1247: <code>Document</code>, readonly
1.6 avankest 1248:
1249: <dd>
1.76 avankest 1250: <p>On getting, the user agent <em class=ct>must</em> run the following
1251: steps:</p>
1252:
1253: <ol>
1254: <li>
1.97 avankest 1255: <p>If the state is not <a href="#done" title="DONE state">DONE</a>
1.99 avankest 1256: raise an <code>INVALID_STATE_ERR</code> exception and terminate these
1.97 avankest 1257: steps.
1.76 avankest 1258:
1259: <li>
1.89 avankest 1260: <p>Return the <a href="#xml-response-entity-body">XML response entity
1261: body</a>.
1.76 avankest 1262: </ol>
1.12 avankest 1263:
1.25 avankest 1264: <dt><dfn id=dfn-status><code>status</code></dfn> of type <code>unsigned
1.9 avankest 1265: short</code>, readonly
1.6 avankest 1266:
1267: <dd>
1.73 avankest 1268: <p>On getting, if available, it <em class=ct>must</em> return the HTTP
1269: status code sent by the server (typically <code>200</code> for a
1270: successful request). Otherwise, if not available, the user agent <em
1271: class=ct>must</em> raise an <code>INVALID_STATE_ERR</code> exception.</p>
1.12 avankest 1272:
1.25 avankest 1273: <dt><dfn id=dfn-statustext><code>statusText</code></dfn> of type
1.9 avankest 1274: <code>DOMString</code>, readonly
1.2 avankest 1275:
1.6 avankest 1276: <dd>
1.73 avankest 1277: <p>On getting, if available, it <em class=ct>must</em> return the HTTP
1278: status text sent by the server (appears after the status code).
1279: Otherwise, if not available, the user agent <em class=ct>must</em> raise
1280: an <code>INVALID_STATE_ERR</code> exception.</p>
1.2 avankest 1281: </dl>
1282:
1.60 avankest 1283: <h3 id=events><span class=secno>2.1. </span>Events for the <code
1.33 avankest 1284: title="">XMLHttpRequest</code> Object</h3>
1.2 avankest 1285:
1.1 avankest 1286: <p>These sections describe the various events that can be dispatched on the
1.2 avankest 1287: object implementing the <code><a
1.60 avankest 1288: href="#xmlhttprequest-object">XMLHttpRequest</a></code> interface. For
1289: this version of the specification only one event is defined.
1.2 avankest 1290:
1.1 avankest 1291: <dl>
1.25 avankest 1292: <dt><dfn id=dfn-readystatechange><code>readystatechange</code></dfn>
1.2 avankest 1293:
1.73 avankest 1294: <dd>When the user agent dispatches a <code
1295: title="">readystatechange</code> event (as indicated above) it <em
1296: class=ct>must not</em> bubble, <em class=ct>must not</em> be cancelable
1297: and <em class=ct>must</em> implement the <code>Event</code> interface.
1298: Its <code>namespaceURI</code> attribute <em class=ct>must</em> be
1299: <code>null</code>. [<cite><a href="#DOM3EV">DOM3Events</a></cite>]
1.1 avankest 1300: </dl>
1.2 avankest 1301:
1.60 avankest 1302: <h3 id=exceptions><span class=secno>2.2. </span>Exceptions for the <code
1.33 avankest 1303: title="">XMLHttpRequest</code> Object</h3>
1304:
1.34 avankest 1305: <pre
1306: class=idl>exception <dfn id=xmlhttprequestexception>XMLHttpRequestException</dfn> {
1.33 avankest 1307: unsigned short code;
1308: };
1309: const unsigned short <a href="#network-err">NETWORK_ERR</a> = 101;</pre>
1310:
1.35 avankest 1311: <p>The <dfn id=network-err><code>NETWORK_ERR</code></dfn> exception is
1312: thrown when a network error occurs in synchronous requests. See the
1.42 avankest 1313: section on <code><a href="#dfn-send">send()</a></code> for more details.
1.33 avankest 1314:
1.31 avankest 1315: <h2 class=no-num id=notcovered>Not in this Specification</h2>
1316:
1317: <p><em>This section is non normative.</em>
1318:
1.73 avankest 1319: <p>This specification does not include the following features which are
1320: being considered for a future version of this specification:
1.31 avankest 1321:
1322: <ul>
1323: <li><code>load</code> event and <code>onload</code> attribute;
1324:
1325: <li><code>error</code> event and <code>onerror</code> attribute;
1326:
1327: <li><code>progress</code> event and <code>onprogress</code> attribute;
1328:
1329: <li><code title="">abort</code> event and <code>onabort</code> attribute;
1330:
1331: <li>Timers have been suggested, perhaps an <code>ontimeout</code>
1332: attribute;
1333:
1334: <li>Property to disable following redirects;
1335:
1.32 avankest 1336: <li><code title="">responseXML</code> for <code>text/html</code>
1337: documents;
1.31 avankest 1338:
1.42 avankest 1339: <li>Cross-site <code title="">XMLHttpRequest</code>;
1340:
1.88 avankest 1341: <li><code>responseBody</code> to deal with byte streams;
1.42 avankest 1342:
1.115 ! avankest 1343: <li><code>overrideMimeType</code> to fix up MIME types;
! 1344:
1.88 avankest 1345: <li><code>getRequestHeader()</code> and
1346: <code>removeRequestHeader()</code>.
1.31 avankest 1347: </ul>
1348:
1.25 avankest 1349: <h2 class=no-num id=bibref>References</h2>
1.2 avankest 1350:
1.7 avankest 1351: <dl>
1.39 avankest 1352: <dt>[<dfn id=DOM3>DOM3Core</dfn>]
1.2 avankest 1353:
1.15 avankest 1354: <dd><cite><a href="http://www.w3.org/TR/DOM-Level-3-Core">Document Object
1355: Model (DOM) Level 3 Core Specification</a></cite>, A. Le Hors, P. Le
1356: Hégaret, L. Wood, G. Nicol, J. Robie, M. Champion, S. Byrne, editors.
1357: World Wide Web Consortium, April 2004.
1.2 avankest 1358:
1.39 avankest 1359: <dt>[<dfn id=DOM3EV>DOM3Events</dfn>]
1.2 avankest 1360:
1361: <dd><cite><a href="http://www.w3.org/TR/DOM-Level-3-Events/">Document
1.15 avankest 1362: Object Model (DOM) Level 3 Events Specification</a></cite>, Björn
1363: Höhrmann, editor. World Wide Web Consortium, April 2006.
1364:
1.39 avankest 1365: <dt>[<dfn id=ref-ecmascript>ECMAScript</dfn>]
1.18 avankest 1366:
1367: <dd><cite><a
1368: href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">ECMAScript
1369: Language Specification</a></cite>, Third Edition. ECMA, December 1999.
1370:
1.39 avankest 1371: <dt>[<dfn id=ref-rfc2046>RFC2046</dfn>]
1.18 avankest 1372:
1.22 avankest 1373: <dd><cite><a href="http://ietf.org/rfc/rfc2046">Multipurpose Internet Mail
1374: Extensions (MIME) Part Two: Media Types</a></cite>, N. Freed, N.
1375: Borenstein, editors. IETF, November 1996.
1.18 avankest 1376:
1.39 avankest 1377: <dt>[<dfn id=RFC2119>RFC2119</dfn>]
1.15 avankest 1378:
1379: <dd><cite><a href="http://ietf.org/rfc/rfc2119">RFC 2119: Key words for
1380: use in RFCs to Indicate Requirement Levels</a></cite>, S. Bradner. IETF,
1381: March 1997.
1382:
1.39 avankest 1383: <dt>[<dfn id=RFC2616>RFC2616</dfn>]
1.15 avankest 1384:
1385: <dd><cite><a href="http://ietf.org/rfc/rfc2616">Hypertext Transfer
1386: Protocol -- HTTP/1.1</a></cite>, R. Fielding, J. Gettys, J. Mogul, H.
1.93 avankest 1387: Frystyk, L. Masinter, P. Leach, T. Berners-Lee, editors. IETF, June 1999.
1.15 avankest 1388:
1.39 avankest 1389: <dt>[<dfn id=ref-rfc2617>RFC2617</dfn>]
1.15 avankest 1390:
1391: <dd><cite><a href="http://ietf.org/rfc/rfc2617">HTTP Authentication: Basic
1.93 avankest 1392: and Digest Access Authentication</a></cite>, P. Hallam-Baker, J.
1393: Hostetler, S. Lawrence, P. Leach, A. Luotonen, L. Stewart, editors. IETF,
1394: June 1999.
1.2 avankest 1395:
1.39 avankest 1396: <dt>[<dfn id=ref-rfc2965>RFC2965</dfn>]
1.2 avankest 1397:
1.22 avankest 1398: <dd><cite><a href="http://ietf.org/rfc/rfc2965">HTTP State Management
1399: Mechanism</a></cite>, D. Kristol, L. Montulli, editors. IETF, October
1400: 2000.
1401:
1.39 avankest 1402: <dt>[<dfn id=ref-rfc3986>RFC3986</dfn>]
1.2 avankest 1403:
1.15 avankest 1404: <dd><cite><a href="http://ietf.org/rfc/rfc3986">Uniform Resource
1405: Identifier (URI): Generic Syntax</a></cite>, T. Berners-Lee, R. Fielding,
1406: L. Masinter, editors. IETF, January 2005.
1.30 avankest 1407:
1.39 avankest 1408: <dt>[<dfn id=ref-window>Window</dfn>]
1.30 avankest 1409:
1410: <dd><cite><a href="http://www.w3.org/TR/Window/">Window Object
1411: 1.0</a></cite>, I. Davis, M. Stachowiak, editors. W3C, April 2006.
1.43 avankest 1412:
1413: <dt>[<dfn id=ref-xml>XML</dfn>]
1414:
1415: <dd><cite><a href="http://www.w3.org/TR/xml/">Extensible Markup Language
1416: (XML) 1.0 (Fourth Edition)</a></cite>, T. Bray, J. Paoli, C.
1417: Sperberg-McQueen, E. Maler, F. Yergeau. W3C, September 2006.
1418:
1419: <dt>[<dfn id=ref-xmlns>XMLNS</dfn>]
1420:
1421: <dd><cite><a href="http://www.w3.org/TR/xml-names/">Namespaces in XML
1422: (Second Edition)</a></cite>, T. Bray, D. Hollander, A. Layman, R. Tobin.
1423: W3C, August 2006.
1.2 avankest 1424: </dl>
1425:
1.25 avankest 1426: <h2 class=no-num id=acknowledgements>Acknowledgements</h2>
1.2 avankest 1427:
1428: <p><em>This section is non-normative</em>
1429:
1.9 avankest 1430: <p>The editor would like to thank to the following people who have
1.35 avankest 1431: contributed to this specification (ordered by first name):
1.2 avankest 1432:
1.1 avankest 1433: <ul>
1.113 avankest 1434: <li>Ahmed Kamel
1435:
1.25 avankest 1436: <li>Alex Hopmann
1437:
1.9 avankest 1438: <li>Alex Vincent
1439:
1.19 avankest 1440: <li>Alexey Proskuryakov
1441:
1.2 avankest 1442: <li>Asbjørn Ulsberg
1443:
1444: <li>Boris Zbarsky
1445:
1446: <li>Björn Höhrmann
1447:
1448: <li>Cameron McCormack
1449:
1450: <li>Christophe Jolif
1451:
1452: <li>Charles McCathieNevile
1453:
1.56 avankest 1454: <li>Dan Winship
1455:
1.73 avankest 1456: <li>David Håsäther
1457:
1.2 avankest 1458: <li>Dean Jackson
1459:
1460: <li>Doug Schepers
1461:
1462: <li>Douglas Livingstone
1463:
1.113 avankest 1464: <li>Eric Lawrence
1465:
1466: <li>Gideon Cohn
1467:
1.2 avankest 1468: <li>Gorm Haug Eriksen
1469:
1470: <li>Hallvord R. M. Steen
1471:
1472: <li>Håkon Wium Lie
1473:
1474: <li>Ian Davis
1475:
1476: <li>Ian Hickson
1477:
1478: <li>Ivan Herman
1479:
1480: <li>Jens Lindström
1481:
1482: <li>Jim Deegan
1483:
1484: <li>Jim Ley
1485:
1.113 avankest 1486: <li>Joe Farro
1487:
1.2 avankest 1488: <li>Jonas Sicking
1489:
1490: <li>Julian Reschke
1491:
1492: <li>Karl Dubost
1493:
1494: <li>Maciej Stachowiak
1495:
1.9 avankest 1496: <li>Magnus Kristiansen
1497:
1.2 avankest 1498: <li>Marc Hadley
1499:
1.55 avankest 1500: <li>Marcos Caceres
1501:
1.88 avankest 1502: <li>Mark Baker
1503:
1.2 avankest 1504: <li>Mark Nottingham
1505:
1.93 avankest 1506: <li>Mohamed Zergaoui
1507:
1.2 avankest 1508: <li>Pawel Glowacki
1509:
1510: <li>Robin Berjon
1511:
1512: <li>Ruud Steltenpool
1.35 avankest 1513:
1514: <li>Simon Pieters
1.113 avankest 1515:
1516: <li>Sunava Dutta
1517:
1518: <li>Zhenbin Xu
1.1 avankest 1519: </ul>
1.2 avankest 1520:
1521: <p>Special thanks to the Microsoft employees who first implemented the
1.60 avankest 1522: <code><a href="#xmlhttprequest-object">XMLHttpRequest</a></code>
1523: interface, which was first widely deployed by the Windows Internet
1524: Explorer browser.
1.2 avankest 1525:
1.56 avankest 1526: <p>Special thanks also to the WHATWG for drafting an initial version of
1527: this specification in their Web Applications 1.0 document.
1.2 avankest 1528:
1529: <p>Thanks also to all those who have helped to improve this specification
1530: by sending suggestions and corrections. (Please, keep bugging us with your
1531: issues!)
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