MediaQueryList.matches

The matches read-only property of the MediaQueryList interface is a boolean value that returns true if the document currently matches the media query list, or false if not.

You can be notified when the value of matches changes by watching for the change event to be fired at the MediaQueryList.

Syntax

var matches = <varm>MediaQueryList.matches;

Value

A boolean value that is true if the document currently matches the media query list; otherwise, it's false.

Examples

This example detects viewport orientation changes by creating a media query using the orientation media feature:

function addMQListener(mq, callback) {
  if (mq.addEventListener) {
    mq.addEventListener("change", callback);
  } else {
    mq.addListener(callback);
  }
}

addMQListener(window.matchMedia("(orientation:landscape)"),
  event => {
    if (event.matches) {
      /* now in landscape orientation */
    } else {
      /* now in portrait orientation */
    }
  }
);

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
matches
9
12
6
10
12.1
5.1
≤37
18
6
Yes
5
1.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/MediaQueryList/matches