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The MediaQueryListEvent constructor creates a new MediaQueryListEvent instance.


var myMqlEvent = new MediaQueryListEvent(init);



An init object that defines features of the new object instance. The available properties are:

  • media: A DOMString representing a serialized media query.
  • matches: A Boolean representing the media query status — true if it matches, false if not.


var media = '(max-width: 600px)';
var matches = true;

var myMediaQueryListEvent = new MediaQueryListEvent({media, matches});


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

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) ? 55 (55) No support (Yes) ?
Feature Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support ? 55.0 (55) No support (Yes) ? (Yes)

See also

Document Tags and Contributors

 Contributors to this page: chrisdavidmills
 Last updated by: chrisdavidmills,