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by rvr_ 1272 days ago
https://www.w3schools.com/jsref/event_onbeforeunload.asp
2 comments
graderjs 1272 days ago
No, it wouldn't be that. That can only prevent unload if it throws a native modal up (cousin of alert, confirm, prompt, etc).

I think what they must have done is push some URL to the history state, using the History API, to fuck with the back and forward buttons, enabling them to intercept when you navigate back, by having added an additional page in there, that you never visited, but that they can use to serve you this interstitial.

Just my 2c

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smhg 1272 days ago
I'm baffled any half decent site would use that. I expected some kind of new web/Chrome API.

That's a very "bold" choice of 538 if you ask me.

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usmannk 1272 days ago
It’s not that, they’re pushing the “before you go” page to the history stack. https://developer.mozilla.org/en-US/docs/Web/API/History/pus...

You can see it if you right click the back button after navigating to the article.

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