Is there a way to detect if a browser window is not currently active?

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无人共我
无人共我 2020-11-21 04:40

I have JavaScript that is doing activity periodically. When the user is not looking at the site (i.e., the window or tab does not have focus), it\'d be nice to not run.

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  •  伪装坚强ぢ
    2020-11-21 04:52

    this worked for me

    document.addEventListener("visibilitychange", function() {
          document.title = document.hidden ? "I'm away" : "I'm here";
    });
    

    demo: https://iamsahilralkar.github.io/document-hidden-demo/

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