The defaultPrevented
read-only property of the Event
interface returns a boolean value indicating whether or not the call to Event.preventDefault()
canceled the event.
The defaultPrevented
read-only property of the Event
interface returns a boolean value indicating whether or not the call to Event.preventDefault()
canceled the event.
A boolean value, 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.
html
<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>
js
function stopLink(event) { event.preventDefault(); } function logClick(event) { const log = document.getElementById("log"); if (event.target.tagName === "A") { log.innerText = event.defaultPrevented ? `Sorry, but you cannot visit this link!\n${log.innerText}` : `Visiting link…\n${log.innerText}`; } } const a = document.getElementById("link2"); a.addEventListener("click", stopLink); document.addEventListener("click", logClick);
Specification |
---|
DOM Standard # ref-for-dom-event-defaultprevented① |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
defaultPrevented |
5 | 12 | 6 | 9 | 11 | 5 | 3 | 18 | 6 | 11 | 5 | 1.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/Event/defaultPrevented