Description

The .unload event occurs when a specified element (and sub elements) have been unloaded.

This event works with any element with an URL (like image, script, frame, iframe).

Depending on the browser, the load event may not trigger if the image is cached (Firefox and IE).

Note: There is also a jQuery Ajax method called load. Which one is called, depends on the parameter.

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This method has the form:

.unload(handler(eventObject))

Parameter	Description
handler(eventObject)	(required) Specifies a function to execute when the event is triggered

Return Value

This form returns a jQuery object.

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This method has the alternate form:

.unload([eventData],handler(eventObject))

Parameter	Description
eventData	(optional) Specifies additional data to pass along to the function
handler(eventObject)	(required) Specifies a function to execute each time the event is triggered

Return Value

This form returns a jQuery object.

Examples

To display an alert when a page is unloaded:

$(window).unload(function () {
  alert("Bye now!");
});