Onmouseover Event - W3Schools

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onmouseover Event

❮ DOM Events ❮ MouseEvent

Example

Call a function when moving the mouse pointer onto an image:

<img onmouseover="bigImg(this)" src="smiley.gif" alt="Smiley"> Try it Yourself »

More examples below.

Description

The onmouseover event occurs when the mouse pointer enters an element.

The onmouseover event is often used together with the onmouseout event, which occurs when the mouse pointer leaves the element.

The onmouseover event is similar to the onmouseenter event. The difference is that the onmouseenter event does not bubble (does not propagate up the document hierarchy). See "More Examples" at the bottom of this page to better understand the differences.

Mouse Events

EventOccurs When
onclick The user clicks on an element
oncontextmenu The user right-clicks on an element
ondblclick The user double-clicks on an element
onmousedown A mouse button is pressed over an element
onmouseenter The pointer is moved onto an element
onmouseleave The pointer is moved out of an element
onmousemove The pointer is moving over an element
onmouseout The mouse pointer moves out of an element
onmouseover The mouse pointer is moved over an element
onmouseup The mouse button is released over an element

See Also:

The Mouse Event Object

Tutorial:

JavaScript Events

Syntax

In HTML:

<element onmouseover="myScript"> Try it Yourself »

In JavaScript:

object.onmouseover = function(){myScript}; Try it Yourself »

In JavaScript, using the addEventListener() method:

object.addEventListener("mouseover", myScript); Try it Yourself »

Technical Details

Bubbles: Yes
Cancelable: Yes
Event type: MouseEvent
HTML tags: All HTML elements, EXCEPT: <base>, <bdo>, <br>, <head>, <html>, <iframe>, <meta>, <param>, <script>, <style>, and <title>
DOM Version: Level 2 Events

More Examples

Example

This example demonstrates the difference between the onmousemove, onmouseenter and mouseover events:

<div onmousemove="myMoveFunction()"> <p id="demo1">I will demonstrate onmousemove!</p></div> <div onmouseenter="myEnterFunction()"> <p id="demo2">I will demonstrate onmouseenter!</p> </div><div onmouseover="myOverFunction()"> <p id="demo3">I will demonstrate onmouseover!</p></div> Try it Yourself »

Browser Support

onmouseover is a DOM Level 2 (2001) feature.

It is fully supported in all browsers:

Chrome Edge Firefox Safari Opera IE
Yes Yes Yes Yes Yes 9-11

❮ DOM Events ❮ MouseEvent

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