Web/API/MediaQueryList/matches

The matches read-only property of the MediaQueryList interface is a Boolean 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 which 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

Specification	Status	Comment
CSS Object Model (CSSOM) View ModuleThe definition of 'matches' 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
`matches`	Chrome Full support 9	Edge Full support 12	Firefox Full support 6	IE Full support 10	Opera Full support 12.1	Safari Full support 5.1	WebView Android Full support Yes	Chrome Android Full support 18	Firefox Android Full support Yes	Opera Android Full support Yes	Safari iOS Full support 5	Samsung Internet Android Full support 1.0

Legend

Full support: Full support