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HTML | defaultPrevented Event Property
  • Last Updated : 22 Jan, 2019

The defaultPrevented event property is used for checking whether the preventDefault() method was called for the event or not.

Return Values:
The defaultPrevented event property returns true if the preventDefault() method was called for the event, else it returns false.

Syntax :

event.defaultPrevented

Below program illustrates the defaultPrevented event property :

Example-1: Checking if preventDefault() was called or not.






<!DOCTYPE html>
<html>
  
<head>
    <title>defaultPrevented Event Property in HTML</title>
    <style>
        h1 {
            color: green;
        }
          
        h2 {
            font-family: Impact;
        }
          
        body {
            text-align: center;
        }
    </style>
</head>
  
<body onclick="MyEvent(event)">
  
    <h1>GeeksforGeeks</h1>
    <h2>defaultPrevented Event Property</h2>
  
    <a id="mylink" href="https://www.geeksforgeeks.org">
    Geeksforgeeks
    </a>
  
    <p>To receive an alert box with the element
    whose eventlistener triggered the event, 
    Click on this line.
    </p>
  
    <script>
        document.getElementById("mylink").addEventListener(
            "click", function(event) {
  
                event.preventDefault()
                alert("Is preventDefault() called : " + 
                    event.defaultPrevented);
            });
    </script>
  
</body>
  
</html>                    

Output:
Beforer clicking the button:

After clicking the button:

Supported Browsers:

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