The onchange
property of the
MediaQueryList
interface is an event handler property representing a
function that is invoked when the change
event fires, i.e when the status of media query support changes. The event object is a
MediaQueryListEvent
instance, which is recognized as a
MediaListQuery
instance in older browsers, for backwards compatibility
purposes.
Syntax
MediaQueryList.onchange = function() { ... };
Example
var mql = window.matchMedia('(max-width: 600px)');
mql.addEventListener( "change", (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 than 600 pixels wide */
console.log('This is a wide screen — more than 600px wide.')
}
})
Specifications
Specification | Status | Comment |
---|---|---|
CSS Object Model (CSSOM) View Module The definition of 'onchange' in that specification. |
Working Draft | Initial definition |
Browser compatibility
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