Web/API/GlobalEventHandlers/onmouseup

The onmouseup property of the GlobalEventHandlers mixin is an EventHandler that processes mouseup events.

The mouseup event fires when the user releases the mouse button.

Note: The opposite of onmouseup is onmousedown.

Syntax

target.onmouseup = functionRef;

Value

functionRef is a function name or a function expression. The function receives a MouseEvent object as its sole argument.

Example

In this example, a piece of "toast" hides when you click down with the mouse, and reappears when you release. It uses the onmousedown and onmouseup event handlers.

HTML

<div class="container">
  <div class="toaster"></div>
  <div class="toast">Hello world!</div>
</div>

CSS

.container {
  position: absolute;
  left: 50%;
  bottom: 20px;
  transform: translate(-50%);
}

.toaster {
  width: 160px;
  height: 110px;
  background: #bbb;
  border-radius: 10px 10px 0 0;
}

.toast {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: -1;
  width: 100px;
  height: 50px;
  padding: 10px;
  background: #ed9;
  border-radius: 10px 10px 0 0;
  transform: translate(-50%, -90px);
  transition: transform .3s;
}

.depressed {
  transform: translate(-50%, -50%);
}

JavaScript

function depress() {
  toast.classList.add('depressed');
}

function release() {
  toast.classList.remove('depressed');
}

const toaster = document.querySelector('.toaster');
const toast = document.querySelector('.toast');

toaster.onmousedown = depress;
document.onmouseup = release;

Result

Specification

Specification	Status	Comment
HTML Living StandardThe definition of 'onmouseup' in that specification.	Living Standard

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`onmouseup`	Chrome Full support Yes	Edge Full support 12	Firefox Full support Yes	IE Full support Yes	Opera Full support Yes	Safari Full support Yes	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support Yes	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support Yes

Legend

Full support: Full support