HTML | DOM MouseEvent offsetX Property

The MouseEvent offsetX property is a read-only property which is used for returning the x-coordinate of the mouse pointer, relative to the target element.

Syntax :

event.offsetX

Return Value: It returns a number which represents the horizontal coordinate of the mouse pointer, in pixels.

Below program illustrates the MouseEvent offsetX property:

Example: Finding out the horizontal coordinate of the mouse pointer relative to a <div> element.

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<!DOCTYPE html>
<html>
  
<head>
    <title>MouseEvent offsetX Property in HTML</title>
    <style>
        div {
            border: 3px solid green;
            height: 100px;
            width: 500px;
        }
          
        h1 {
            color: green;
        }
          
        h2 {
            font-family: Impact;
        }
          
        body {
            text-align: center;
        }
    </style>
</head>
  
<body>
  
    <h1>GeeksforGeeks</h1>
    <h2>MouseEvent offsetX Property</h2>
  
    <p>Click inside the green box to get 
      the x-coordinate relative to the top edge.</p>
  
    <div onclick="coord(event)"></div>
  
    <p>The x-coordinate, relative to 
      the top edge of the DIV element is: 
      <span id="test"></span></p>
  
    <script>
        
        function coord(event) {
            
            var c = event.offsetX;
            document.getElementById(
              "test").innerHTML = c;
        }
    </script>
  
</body>
  
</html>

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Output:

  • After clicking the button:
  • After clicking the button:

Supported Browsers:

  • Opera
  • Internet Explorer
  • Google Chrome
  • Firefox
  • Apple Safari


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I am a technology enthusiast who has a keen interest in programming I am pursuing Engineering in Computer Science from GEU, Dehradun I like to unwind by watching movies and English sitcomsI have a keen interest in music

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