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The defaultPrevented read-only property of the Event interface returns a Boolean indicating whether or not Event.preventDefault() was called on the event.

Note: You should use this instead of the non-standard, deprecated getPreventDefault() method (see bug 691151).


var defaultWasPrevented = event.defaultPrevented;


A Boolean, where true indicates that the default user agent action was prevented, and false indicates that it was not.


This example logs attempts to visit links from two <a> elements. JavaScript is used to prevent the second link from working.


<p><a id="link1" href="#link1">Visit link 1</a></p>
<p><a id="link2" href="#link2">Try to visit link 2</a> (you can't)</p>
<p id="log"></p>


function stopLink(event) {

function logClick(event) {
  const log = document.getElementById('log');
  if ( === 'A') {
    if (event.defaultPrevented) {
      log.innerText = 'Sorry, but you cannot visit this link!\n' + log.innerText;
    else {
      log.innerText = 'Visiting link...\n' + log.innerText;

const a = document.getElementById('link2');
a.addEventListener('click', stopLink);
document.addEventListener('click', logClick);



Specification Status Comment
The definition of 'Event.defaultPrevented()' in that specification.
Living Standard  

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
defaultPreventedChrome Full support 18Edge Full support 12Firefox Full support 6IE Full support 9Opera Full support 11Safari Full support 5WebView Android Full support YesChrome Android Full support 18Firefox Android Full support 6Opera Android Full support 11Safari iOS Full support 5Samsung Internet Android ?


Full support  
Full support
Compatibility unknown  
Compatibility unknown

Tag Dokumen dan Kontributor

Terakhir diperbarui oleh: nakhodkiin,