MediaQueryListEvent
The MediaQueryListEvent
object stores information on the changes that have happened to a MediaQueryList
object — instances are available as the event object on a function referenced by a MediaQueryList.onchange
property or MediaQueryList.addListener()
call.
Constructor
MediaQueryListEvent()
- Creates a new
MediaQueryListEvent
instance.
Properties
The MediaQueryListEvent
interface inherits properties from its parent interface, Event
.
MediaQueryListEvent.matches
Read only- A
Boolean
that returnstrue
if thedocument
currently matches the media query list, orfalse
if not. MediaQueryListEvent.media
Read only- A
DOMString
representing a serialized media query.
Methods
The MediaQueryListEvent
interface inherits methods from its parent interface, Event
.
Examples
var mql = window.matchMedia('(max-width: 600px)');
function screenTest(e) {
if (e.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 than 600 pixels wide */
para.textContent = 'This is a wide screen — more than 600px wide.';
document.body.style.backgroundColor = 'blue';
}
}
mql.addListener(screenTest);
Specifications
Specification | Status | Comment |
---|---|---|
CSS Object Model (CSSOM) View Module The definition of 'MediaQueryListEvent' in that specification. |
Working Draft | Initial definition |
Browser compatibility
BCD tables only load in the browser