MediaQueryListEvent
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2020.
The MediaQueryListEvent interface of the CSSOM view API represents the event object for the change event fired on a MediaQueryList.
Constructor
MediaQueryListEvent()-
Creates a new
MediaQueryListEventinstance.
Instance properties
The MediaQueryListEvent interface inherits properties from its parent interface, Event.
MediaQueryListEvent.matchesRead only-
A boolean value that is
trueif thedocumentcurrently matches the media query list, orfalseif not. MediaQueryListEvent.mediaRead 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("(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 |