HTML | DOM Header Object

The DOM header object is used to represent the HTML <header> element. The header element can be accessed by the getElementById() method.

Syntax:

document.getElementById("id"); 

Where ‘id’ is the ID assigned to the header tag.



Example-1: In the below program the header element is accessed and the color of the text inside the header element is changed.

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<!DOCTYPE html> 
<html
<body
<center>
        <h1 style = "color:green;"
          GeeksForGeeks 
        </h1
  
        <h2>DOM header Object</h2
  
        <article>
          <header id="head">
              <p>A computer science portal for geeks.</p>
          </header>
        </article>
          
        <button onclick="Geeks()">Click Here!</button>
          
        <script>
        function Geeks() {
            var doc = document.getElementById("head");
            doc.style.color = "green";
        }
        </script>
</body
</html

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Output:
Before clicking on button:
header
After clicking on button:
header

Example-2: Header Object can be created by using the document.createElement method.

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<!DOCTYPE html> 
<html
<body
<center>
        <h1 style = "color:green;"
          GeeksForGeeks 
        </h1
  
        <h2>DOM header Object</h2
  
        <button onclick="Geeks()">Click Here!</button>
        <p id="head" style="color:green;"></p>
        <script>
        function Geeks() {
          var x = document.createElement("HEADER");
          document.body.appendChild(x);
          
          var doc = document.createElement("H3"); 
          var t = document.createTextNode("A computer 
          science portal for geeks.");
          doc.appendChild(t);
          
          document.getElementById("head").appendChild(doc);
        }
        </script>
</body
</html

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Output:
Before clicking on button:
header
After clicking on button:
header



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