Web/API/MediaQueryList/onchange

The onchange property of the MediaQueryList interface is an event handler property representing a function that is invoked when the change event fires, i.e when the status of media query support changes. The event object is a MediaQueryListEvent instance, which is recognised as a MediaListQuery instance in older browsers, for backwards compatibility purposes.

Syntax

MediaQueryList.onchange = function() { ... };

Example

var mql = window.matchMedia('(max-width: 600px)');

mql.addEventListener( "change", (e) => {
    if (e.matches) {
    /* the viewport is 600 pixels wide or less */
    console.log('This is a narrow screen — less than 600px wide.')
  } else {
    /* the viewport is more than than 600 pixels wide */
    console.log('This is a wide screen — more than 600px wide.')
  }
})

Specifications

Specification	Status	Comment
CSS Object Model (CSSOM) View ModuleThe definition of 'onchange' in that specification.	Working Draft	Initial definition

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`onchange`	Chrome Full support 45	Edge Full support ≤79	Firefox Full support 55	IE No support No	Opera Full support Yes	Safari Full support 14	WebView Android Full support 45	Chrome Android Full support 45	Firefox Android Full support 55	Opera Android Full support Yes	Safari iOS Full support 14	Samsung Internet Android Full support 5.0

Legend

Full support: Full support
No support: No support