Element: mouseleave event

The mouseleave event is fired at an Element when the cursor of a pointing device (usually a mouse) is moved out of it.

Bubbles No
Cancelable No
Interface MouseEvent
Event handler property onmouseleave

mouseleave and mouseout are similar but differ in that mouseleave does not bubble and mouseout does. This means that mouseleave is fired when the pointer has exited the element and all of its descendants, whereas mouseout is fired when the pointer leaves the element or leaves one of the element's descendants (even if the pointer is still within the element).

mouseenter.png
One mouseleave event is sent to each element of the hierarchy when leaving them. Here four events are sent to the four elements of the hierarchy when the pointer moves from the text to an area outside of the most outer div represented here.
mouseover.png
One single mouseout event is sent to the deepest element of the DOM tree, then it bubbles up the hierarchy until it is canceled by a handler or reaches the root.

Examples

The mouseout documentation has an example illustrating the difference between mouseout and mouseleave.

mouseleave

The following trivial example uses the mouseenter event to change the border on the div when the mouse enters the space alloted to it. It then adds an item to the list with the number of the mouseenter or mouseleave event.

HTML

<div id='mouseTarget'>
 <ul id="unorderedList">
  <li>No events yet!</li>
 </ul>
</div>

CSS

Styling the div to make it more visible.

#mouseTarget {
  box-sizing: border-box;
  width:15rem;
  border:1px solid #333;
}

JavaScript

var enterEventCount = 0;
var leaveEventCount = 0;
const mouseTarget = document.getElementById('mouseTarget');
const unorderedList = document.getElementById('unorderedList');

mouseTarget.addEventListener('mouseenter', e => {
  mouseTarget.style.border = '5px dotted orange';
  enterEventCount++;
  addListItem('This is mouseenter event ' + enterEventCount + '.');
});

mouseTarget.addEventListener('mouseleave', e => {
  mouseTarget.style.border = '1px solid #333';
  leaveEventCount++;
  addListItem('This is mouseleave event ' + leaveEventCount + '.');
});

function addListItem(text) {
  // Create a new text node using the supplied text
  var newTextNode = document.createTextNode(text);

  // Create a new li element
  var newListItem = document.createElement("li");

  // Add the text node to the li element
  newListItem.appendChild(newTextNode);

  // Add the newly created list item to list
  unorderedList.appendChild(newListItem);  
}

Result

Specifications

Specification Status
UI Events
The definition of 'mouseleave' in that specification.
Working Draft
Document Object Model (DOM) Level 3 Events Specification
The definition of 'mouseleave' in that specification.
Obsolete

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
mouseleave eventChrome Full support 30Edge Full support YesFirefox Full support 10IE Full support 5.5Opera Full support 17Safari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support 10Opera Android Full support 18Safari iOS Full support YesSamsung Internet Android Full support Yes

Legend

Full support  
Full support

See also