Element: mouseover event

The mouseover event is fired at an Element when a pointing device (such as a mouse or trackpad) is used to move the cursor onto the element or one of its child elements.

Bubbles Yes
Cancelable Yes
Interface MouseEvent
Event handler property onmouseover

Examples

The following example illustrates the difference between mouseover and mouseenter events.

HTML

<ul id="test">
  <li>item 1</li>
  <li>item 2</li>
  <li>item 3</li>
</ul>

JavaScript

let test = document.getElementById("test");
  
// This handler will be executed only once when the cursor
// moves over the unordered list
test.addEventListener("mouseenter", function( event ) {   
  // highlight the mouseenter target
  event.target.style.color = "purple";

  // reset the color after a short delay
  setTimeout(function() {
    event.target.style.color = "";
  }, 500);
}, false);

// This handler will be executed every time the cursor
// is moved over a different list item
test.addEventListener("mouseover", function( event ) {   
  // highlight the mouseover target
  event.target.style.color = "orange";

  // reset the color after a short delay
  setTimeout(function() {
    event.target.style.color = "";
  }, 500);
}, false);

Result

Specifications

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

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
mouseover eventChrome Full support 2Edge Full support 12Firefox Full support 6IE Full support 9Opera Full support 9.5Safari Full support 4WebView Android Full support ≤37Chrome Android Full support 18Firefox Android Full support 6Opera Android Full support 10.1Safari iOS Full support 3.2Samsung Internet Android Full support 1.0

Legend

Full support  
Full support

See also