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
UI Events # event-type-mouseover

Browser compatibility

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