please dont rip this site

JavaScript: The Definitive Guide

Previous Chapter 21
JavaScript Reference		 Next
 

Window.onunload() Handler

Name

Window.onunload() Handler---executed when the browser leaves a page

Availability

Navigator 2.0, Internet Explorer 3.0

Synopsis

<BODY    a definition of the handler
    [ onUnload="JavaScript statements" ]
        ...
>
<FRAMESET    another way to define the handler
    [ onUnload="JavaScript statements" ]
       ...
>
window.onunload=handler-func    defining the handler directly
window.onunload();    an explicit invocation of the handler

Description

onunload() is an event handler invoked by the browser when it unloads (i.e., leaves) a document or a frameset. The onunload() handler is defined by the onUnload attribute of the <BODY> or <FRAMESET> HTML tags. The value of this attribute may be any number of JavaScript statements, separated by semicolons.

The onunload() event handler provides the opportunity to perform any necessary "clean-up" of the browser state before a new document is loaded. For example, an onunload() handler might restore the Window.defaultStatus property (the default message in the status line) to the empty string.

When the browser leaves a site using frames, the onunload() handlers for each frame will be invoked before the onunload() handler of the browser itself.

Usage

The onunload() handler is invoked when the user has instructed the browser to leave the current page and move somewhere else. Therefore, it is almost never appropriate to delay the loading of the desired new page by popping up dialog boxes (with Window.confirm() or Window.prompt() for example) from an onunload() event handler.

See Also

"Window", "Window.onunload()"

Previous Home Next
Window.onload() Book Index Window.open()
HTML: The Definitive Guide CGI Programming JavaScript: The Definitive Guide Programming Perl WebMaster in a Nutshell
file: /Techref/language/java/script/definitive/refp_452.htm, 5KB, , updated: 2019/10/14 15:00, local time: 2024/11/23 08:47,
TOP NEW HELP FIND: 
3.149.237.231:LOG IN
 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://ecomorder.com/Techref/language/java/script/definitive/refp_452.htm"> [Chapter 21] Reference: Window.onunload()</A>
After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?
 

Welcome to ecomorder.com!

 

Welcome to ecomorder.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .