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 change
event.
Constructor
MediaQueryListEvent()
-
Creates a new
MediaQueryListEvent
instance.
Instance properties
The MediaQueryListEvent
interface inherits properties from its parent interface, Event
.
MediaQueryListEvent.matches
Read only-
A boolean value that is
true
if thedocument
currently matches the media query list, orfalse
if not. MediaQueryListEvent.media
Read only-
A string representing a serialized media query.
Instance methods
The MediaQueryListEvent
interface inherits methods from its parent interface, Event
.
Examples
js
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 # the-mediaquerylist-interface |
Browser compatibility
BCD tables only load in the browser