HTML onunload event attribute
Example
Execute a JavaScript block when the user unloads the document:
<body onunload="goodbye()">
Browser support
| IE | Firefox | Chrome | Safari | Opera |
|---|---|---|---|---|
All major browsers support the onunload attribute.
Definition and usage
The onunload attribute is triggered when the page is being downloaded (or the browser window has been closed).
onunload occurs when the user navigates away from the page (by clicking a link, submitting a form, or closing the browser window, etc.).
Note:If you reload the page, the unload event (and the onload event) will also be triggered.
Differences between HTML 4.01 and HTML5
None.
Syntax
<element onunload="script">
Attribute value
| Value | Description |
|---|---|
| script | Script executed when onunload occurs. |
