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HTML | DOM Mark Object

  • Last Updated : 28 Jun, 2021

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: 
 

html




<!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. 
 

html




<!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

Supported Browsers:

  • Google Chrome
  • Internet Explorer (after IE 9)
  • Mozilla Firefox
  • Opera
  • Safari

 

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