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HTML | DOM Mark Object
  • Last Updated : 22 Jan, 2019

The Mark Object in HTML DOM is used to represent the HTML <mark> element. The Mark Object is new in HTML 5. The <mark> element can be accessed by using getElementById() method.

Syntax:

document.getElementById("id")

Where id is assigned to the <mark> tag.

Note: This tag is not supported by Internet Explorer and earlier versions.

Example 1:






<!DOCTYPE html> 
<html
    <head>
        <title>
            HTML DOM Mark Object
        </title>
    </head>
      
    <body style = "text-align:center;"
  
        <h1 style = "color:green;"
            GeeksForGeeks 
        </h1
          
        <h2>DOM mark Object</h2
  
        <p>
            A <mark id = "mark_obj">computer science</mark
            portal for geeks.
        </p>
          
        <button onclick = "Geeks()">
            Click Here
        </button>
          
        <script>
            function Geeks() {
                var txt = document.getElementById("mark_obj");
                txt.style.fontSize = "x-large";
            }
        </script>
    </body
</html>                    

Output:
Before click on the button:
mark
After click on the button:
mark

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




<!DOCTYPE html> 
<html
    <head>
        <title>
            HTML DOM Mark Object
        </title>
    </head>
      
    <body style = "text-align:center;"
  
        <h1 style = "color:green;"
            GeeksForGeeks 
        </h1
          
        <h2>DOM mark Object</h2
  
        <button onclick = "Geeks()">
            Click Here!
        </button>
          
        <br><br>
          
        <div>
            A <span id = "p"></span>
            portal for geeks.
        </div>
          
        <script>
            function Geeks() {
                var txt = document.createElement("MARK");
                var t = document.createTextNode("computer science");
                txt.appendChild(t);
                document.getElementById("p").appendChild(txt);
            }
        </script>
</body
</html>                    

Output:
Before click on the button:
mark
After click on the button:
mark

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