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Close button click event capture

Source: Internet
Author: User
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<1> you only need to add the following script to your page ..

< Html >
< Head >
< Title > New Document </ Title >

< Script Language = Javascript >
Function Window. onbeforeunload ()
{
Event. returnvalue =   "" ;
}
</ Script >
</ Head >

<Body>

</Body>
</Html>

<2> Purpose
By capturing the close button event of the browser, you can provide a prompt before closing the page, prompting you to close it.

<3> application expansion
You can add the Ajax part later and perform operations in the background.CodeTo release space.

<4> mainly used in BS structured applicationsProgram

From http://abse.cnblogs.com/archive/2006/06/23/433928.html

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