.mouseover( handler(eventObject) ) Returns: jQuery
Description: Bind an event handler to the "mouseover" JavaScript event, or trigger that event on an element.
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version added: 1.0.mouseover( handler(eventObject) )
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handler(eventObject)Type: Function()A function to execute each time the event is triggered.
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version added: 1.4.3.mouseover( [eventData ], handler(eventObject) )
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eventDataType: PlainObjectAn object containing data that will be passed to the event handler.
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handler(eventObject)Type: Function()A function to execute each time the event is triggered.
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version added: 1.0.mouseover()
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This method does not accept any arguments.
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This method is a shortcut for .on('mouseover', handler)
in the first two variations, and .trigger('mouseover')
in the third.
The mouseover
event is sent to an element when the mouse pointer enters the element. Any HTML element can receive this event.
For example, consider the HTML:
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The event handler can be bound to any element:
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Now when the mouse pointer moves over the Outer <div>
, the message is appended to <div id="log">
. We can also trigger the event when another element is clicked:
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After this code executes, clicks on Trigger the handler will also append the message.
This event type can cause many headaches due to event bubbling. For instance, when the mouse pointer moves over the Inner element in this example, a mouseover
event will be sent to that, then trickle up to Outer. This can trigger our bound mouseover
handler at inopportune times. See the discussion for .mouseenter()
for a useful alternative.
Example:
Show the number of times mouseover and mouseenter events are triggered. mouseover
fires when the pointer moves into the child element as well, while mouseenter
fires only when the pointer moves into the bound element.
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