onunloadEvent
Examples
JavaScript code executed when the user unloads the document:
<body onunload="myFunction()">
Try it Yourself »
Definition and Usage
The onunload event occurs when the user exits the page.
The onunload event occurs when the user leaves the page (by clicking a link, submitting a form, closing the browser window, etc.).
Note:The onunload event also triggers the page load event (onloadonloadevent).
Syntax
In HTML:
<body
onunload="SomeJavaScriptCode">
In JavaScript:
window.onunload=function(){SomeJavaScriptCode};
| Parameters | Description |
|---|---|
| SomeJavaScriptCode | Required. Specifies the JavaScript to execute when the event occurs. |
Browser Support
| Event | |||||
|---|---|---|---|---|---|
| onunload | Yes | Yes | Yes | Yes | Yes |
Note:Due to different browser settings, this event may not work as expected.
The following HTML tags support onunload:
<body>, <frameset>
Event Object Other Extensions