MediaQueryListEvent: matches property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

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

Value

A boolean value; returns true if the document currently matches the media query list, false if not.

Examples

js
const para = document.querySelector("p"); // This is the UI element where to display the text
const mql = window.matchMedia("(max-width: 600px)");

mql.addEventListener("change", (event) => {
  if (event.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 600 pixels wide
    para.textContent = "This is a wide screen — more than 600px wide.";
    document.body.style.backgroundColor = "blue";
  }
});

Specifications

Specification
CSSOM View Module
# dom-mediaquerylistevent-matches

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
matches

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also