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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.
878
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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