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mouseleave

The mouseleave event is fired when the pointer of a pointing device (usually a mouse) is moved out of an element that has the listener attached to it.

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).


One `mouseleave` event is sent to each element of the hierarchy when leaving them. Here 4 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.	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.

General info

Specification: DOM L3
Interface: MouseEvent
Bubbles: No
Cancelable: No
Target: Element
Default Action: None

Properties

Property	Type	Description
`target` Read only	`EventTarget`	The event target (the topmost target in the DOM tree).
`type` Read only	`DOMString`	The type of event.
`bubbles` Read only	Boolean	Whether the event normally bubbles or not
`cancelable` Read only	`Boolean`	Whether the event is cancellable or not
`view` Read only	`WindowProxy`	`document.defaultView` (`window` of the document)
`detail` Read only	`long` (`float`)	0.
`currentTarget` Read only	`EventTarget`	The node that had the event listener attached.
`relatedTarget` Read only	`EventTarget`	For `mouseover`, `mouseout`, `mouseenter` and `mouseleave` events: the target of the complementary event (the `mouseleave` target in the case of a `mouseenter` event). `null` otherwise.
`screenX` Read only	long	The X coordinate of the mouse pointer in global (screen) coordinates.
`screenY` Read only	long	The Y coordinate of the mouse pointer in global (screen) coordinates.
`clientX` Read only	long	The X coordinate of the mouse pointer in local (DOM content) coordinates.
`clientY` Read only	long	The Y coordinate of the mouse pointer in local (DOM content) coordinates.
`button` Read only	unsigned short	This is always 0 as no button presses trigger this event (mouse movement does).
`buttons` Read only	unsigned short	The buttons depressed when the mouse event was fired: Left button=1, Right button=2, Middle (wheel) button=4, 4th button (typically, "Browser Back" button)=8, 5th button (typically, "Browser Forward" button)=16. If two or more buttons are depressed, returns the logical sum of the values. E.g., if Left button and Right button are depressed, returns 3 (=1 \| 2). More info.
`mozPressure` Read only	float	The amount of pressure applied to a touch or tabdevice when generating the event; this value ranges between 0.0 (minimum pressure) and 1.0 (maximum pressure).
`ctrlKey` Read only	boolean	`true` if the control key was down when the event was fired. `false` otherwise.
`shiftKey` Read only	boolean	`true` if the shift key was down when the event was fired. `false` otherwise.
`altKey` Read only	boolean	`true` if the alt key was down when the event was fired. `false` otherwise.
`metaKey` Read only	boolean	`true` if the meta key was down when the event was fired. `false` otherwise.

Examples

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

The following example illustrates how to use mouseout, to simulate the principle of event delegation for the mouseleave event.

<ul id="test">
  <li>
    <ul class="leave-sensitive">
      <li>item 1-1</li>
      <li>item 1-2</li>
    </ul>
  </li>
  <li>
    <ul class="leave-sensitive">
      <li>item 2-1</li>
      <li>item 2-2</li>
    </ul>
  </li>
</ul>

<script>
  var delegationSelector = ".leave-sensitive";

  document.getElementById("test").addEventListener("mouseout", function( event ) {
    var target = event.target,
        related = event.relatedTarget,
        match;

    // search for a parent node matching the delegation selector
    while ( target && target != document && !( match = matches( target, delegationSelector ) ) ) {
        target = target.parentNode;
    }

    // exit if no matching node has been found
    if ( !match ) { return; }

    // loop through the parent of the related target to make sure that it's not a child of the target
    while ( related && related != target && related != document ) {
        related = related.parentNode;
    }

    // exit if this is the case
    if ( related == target ) { return; }

    // the "delegated mouseleave" handler can now be executed
    // change the color of the text
    target.style.color = "orange";
    // reset the color after a small amount of time
    setTimeout(function() {
        target.style.color = "";
    }, 500);
    
    
  }, false);
 
 
  // function used to check if a DOM element matches a given selector
  // the following code can be replaced by this IE8 compatible function: https://gist.github.com/2851541
  function matches( elem, selector ){
    // the matchesSelector is prefixed in most (if not all) browsers
    return elem.matchesSelector( selector );
  };
</script>

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	30^[1]	(Yes)	10^[2]	5.5	(Yes) No support 15.0 17.0	7^[3]
On disabled form elements	No support	No support	44.0 (44.0)^[4]	No support	No support	?

Feature	Android	Chrome for Android	Edge	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	?	?	(Yes)	?	?	?	?
On disabled form elements	?	?	No support	?	?	?	?

[1] Implemented in bug 236215.

[2] Implemented in bug 432698.

[3] Safari 7 fires the event in many situations where it's not allowed to, making the whole event useless. See bug 470258 for the description of the bug (it existed in old Chrome versions as well). Safari 8 has correct behavior

[4] Implemented in bug 218093.

mouseleave

General info

Properties

Examples

Browser compatibility

See also