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Asked: 2026-05-26T07:53:30+00:00

Is there a way to tell a javascript function to continue running even as

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Is there a way to tell a javascript function to continue running even as a phone is locked?

Pretty much I have a timer that I need to continue to run even as the phone is set to idle.

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1 Answer

  1. Editorial Team

    Yes, you can. You can even run a JavaScript when the safari is in the background.

    Just put a hidden frame on your site:

    <iframe src="background.html" style="display:none;"></iframe>

    background.html:

    <!DOCTYPE HTML>
<head>
<meta http-equiv="refresh" content="3" />
</head>
<body>
<script>
parent.run_function_from_core_page();
</script>
</body>
</html>

    The page in the hidden frame refreshes every 3 seconds, and run the JavaScript, even if the phone is locked.

    Be careful because it can lead to high data traffic also if you are not on WiFi!

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