MediaQueryListEvent.matches
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
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
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