MediaQueryListEvent

The MediaQueryListEvent object stores information on the changes that have happened to a MediaQueryList object — instances are available as the event object on a function referenced by a MediaQueryList.onchange property or MediaQueryList.addListener() call.

Constructor

MediaQueryListEvent()

Creates a new MediaQueryListEvent instance.

Properties

The MediaQueryListEvent interface inherits properties from its parent interface, Event.

MediaQueryListEvent.matchesRead only

A boolean value that is true if the document currently matches the media query list, or false if not.

MediaQueryListEvent.mediaRead only

A DOMString representing a serialized media query.

Methods

The MediaQueryListEvent interface inherits methods from its parent interface, Event.

Examples

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

function screenTest(e) {
  if (e.matches) {
    /* the viewport is 600 pixels wide or less */
    para.textContent = 'This is a narrow screen — less than 600px wide.';
    document.body.style.backgroundColor = 'red';
  } else {
    /* the viewport is more than than 600 pixels wide */
    para.textContent = 'This is a wide screen — more than 600px wide.';
    document.body.style.backgroundColor = 'blue';
  }
}

mql.addListener(screenTest);

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
MediaQueryListEvent
39
79
55
No
26
14
39
39
55
26
14
4.0
MediaQueryListEvent
39
79
55
No
26
14
39
39
55
26
14
4.0
matches
39
79
55
No
26
14
39
39
55
26
14
4.0
media
39
79
55
No
26
14
39
39
55
26
14
4.0

See also

© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/MediaQueryListEvent