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 Module The definition of 'matches' in that specification. |
Working Draft | Initial definition |
Browser compatibility
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