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I'm trying to get some javascript to run before the user closes the form, and I'm using onbeforeunload, but it's firing on postbacks, in addition to when the form closes. &nbsp;<br />
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Is there a way to get this script to only fire when the form is about to be closed.
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I'm trying to get some javascript to run before the user closes the form, and I'm using onbeforeunload, but it's firing on postbacks, in addition to when the form closes.  

Is there a way to get this script to only fire when the form is about to be closed.

Fire function before close

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.