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HTML | DOM HTML Object

Last Updated : 07 Feb, 2019
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The HTML Object property in HTML DOM is used to represent or access the HTML <html> element with in the object. The <html> element is used to return the HTML document as an Element Object. Syntax:
  • It is used to access a <html> element.
    var x = document.getElementsByTagName("HTML")[0];
  • It can also be used to access a <html> element.
    var x = document.documentElement;
Property Values:
  • getElementsByTagName(): It is used to return a collection of all child elements with the specified tag name.
  • innerHTML: It is used to set or return the content of an element.
  • getElementsById(): It is used to return a collection of all child elements with the specified Id.
Example-1: Access HTML element using document.getElementsByTagName("HTML")[0]; html 
<!DOCTYPE html>
<html>
<title>
    HTML | DOM HTML Object Property
</title>
<style>
    body {
        text-align: center;
        width: 70%;
    }
    
    h1 {
        color: green;
    }
    
    h1,
    h2 {
        text-align: center;
    }
</style>

<body>
    <h1>GeeksforGeeks</h1>
    <h2> HTML Object</h2>

    <p>Click the button to get the 
      HTML content of the html element.</p>

    <button onclick="GFG()">Click</button>

    <p id="Geeks"></p>

    <script>
        function GFG() {
            
          // Access html element and 
          return using "innerHTML"
          var x = 
          document.getElementsByTagName(
            "HTML")[0].innerHTML;
          document.getElementById("Geeks").innerHTML = x;
      }
    </script>
</body>

</html>
Output: Before Click On the Button: After Click On the Button: Example-2: Access html element and return element is first or second. html 
<!DOCTYPE html>
<html>
<title>
    HTML | DOM HTML Object Property
</title>
<style>
    body {
        text-align: center;
        width: 70%;
    }
    
    h1 {
        color: green;
    }
    
    h1,
    h2 {
        text-align: center;
    }
</style>

<body>
    <h1>GeeksforGeeks</h1>
    <h2> HTML Object</h2>

    <p>Click the button to get the 
      HTML content of the html element.</p>
    <p>Using the document.documentElement</p>
    <button onclick="GFG()">Click</button>

    <p id="Geeks"></p>

    <script>
        function GFG() {
            // Access html element and return html 
           // with position value of html element.
            var x = 
            document.documentElement.innerHTML;
            document.getElementById(
              "Geeks").innerHTML = "first" + x;
          
            var y = 
            document.documentElement.innerHTML;
            document.getElementById(
              "Geeks").innerHTML = y + "second";
        }
    </script>
</body>

</html>
Output: Before Click On the Button: After Click On the Button: Example-3: Access html element and return all child with specified tag name. html 
<!DOCTYPE html>
<html>
<title>
    HTML | DOM HTML Object Property
</title>
<style>
    body {
        text-align: center;
        width: 70%;
    }
    
    h1 {
        color: green;
    }
    
    h1,
    h2 {
        text-align: center;
    }
</style>

<body>
    <h1>GeeksforGeeks</h1>
    <h2> HTML Object</h2>

    <p>Click the button to get the
      HTML content of the html element.</p>
    <p>Using the getElementsByTagName("HTML")[0] 
      and documentElement</p>
    <button onclick="GFG()">Click</button>

    <p id="Geeks"></p>

    <script>
        function GFG() {
            // access and return html element
            var x = 
              document.getElementsByTagName(
                "HTML")[0].innerHTML;
            document.getElementById("Geeks").innerHTML =
              "getElementsByTagName" + x;
            var y = 
             document.documentElement.innerHTML;
            document.getElementById("Geeks").innerHTML =
              y + "documentElement";
        }
    </script>
</body>

</html>
Output: Before Click On the Button: After Click On the Button: Supported Browsers: The browser supported by DOM HTML Object property are listed below:
  • Google Chrome
  • Internet Explorer
  • Firefox
  • Opera
  • Safari

S
shubhamsingh10
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