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benknight/before-unload-bookmarklet.md

Last active November 28, 2018 04:41
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Before Unload Bookmarklet
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before-unload-bookmarklet.md

Before Unload Bookmarklet

Clicking this bookmarklet on a browser tab will cause the above alert to display when you try to close it. Handy if you have work you really don't want to lose.

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gistfile1.txt
javascript:window.addEventListener%28%22beforeunload%22%2C%20function%20%28e%29%20%7B%20var%20confirmationMessage%20%3D%20%22o/%22%3B%20%28e%20%7C%7C%20window.event%29.returnValue%20%3D%20confirmationMessage%3B%20return%20confirmationMessage%3B%20%7D%29%3B
@tzi
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tzi commented Dec 10, 2015

"work you really don't want to use" => I tkink you meant "to loose".

@benknight
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I'll strike a compromise with you and change it to: "to lose"! Thanks ;)

@simevidas
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This is a lifesaver. I often load a ton of tweets into my Twitter timeline, and then accidentally click on a link to another page.

@shmdhussain
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How to use this? Where i need to paste the code?

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