MediaQueryList: change event
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2020.
The change event of the MediaQueryList interface fires when the status of media query support changes.
Syntax
Use the event name in methods like addEventListener(), or set an event handler property.
js
addEventListener("change", (event) => { })
onchange = (event) => { }
Event type
A MediaQueryListEvent. Inherits from Event.
Event properties
The MediaQueryListEvent interface inherits properties from its parent interface, Event.
MediaQueryListEvent.matchesRead only-
A boolean value that is
trueif thedocumentcurrently matches the media query list, orfalseif not. MediaQueryListEvent.mediaRead only-
A string representing a serialized media query.
Example
js
const mql = window.matchMedia("(width <= 600px)");
mql.onchange = (e) => {
if (e.matches) {
/* the viewport is 600 pixels wide or less */
console.log("This is a narrow screen — less than 600px wide.");
} else {
/* the viewport is more than 600 pixels wide */
console.log("This is a wide screen — more than 600px wide.");
}
};
Specifications
| Specification |
|---|
| CSSOM View Module # dom-mediaquerylist-onchange |
Browser compatibility
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