当我锁定iPhone时Javascript停止，它还可以运行吗？ [英] Javascript stops as I lock iphone, can it still run?
问题描述
有没有办法告诉javascript函数即使手机被锁定也能继续运行？
Is there a way to tell a javascript function to continue running even as a phone is locked?
我有一个计时器，我需要继续运行即使手机设置为空闲。
Pretty much I have a timer that I need to continue to run even as the phone is set to idle.
推荐答案
是的，你可以。当safari在后台时，您甚至可以运行JavaScript。
Yes, you can. You can even run a JavaScript when the safari is in the background.
只需在您的网站上放置一个隐藏的框架：
Just put a hidden frame on your site:
<iframe src="background.html" style="display:none;"></iframe>
background.html：
background.html:
<!DOCTYPE HTML>
<head>
<meta http-equiv="refresh" content="3" />
</head>
<body>
<script>
parent.run_function_from_core_page();
</script>
</body>
</html>
隐藏帧中的页面每3秒刷新一次，并运行JavaScript，即使手机是已锁定。
The page in the hidden frame refreshes every 3 seconds, and run the JavaScript, even if the phone is locked.
请注意，如果您不使用WiFi，也会导致高数据流量！
Be careful because it can lead to high data traffic also if you are not on WiFi!
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