HTML5 on iPhone Safari - data stored by localStorage does not always persist. Why?
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by Aerodyne
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Published on 2010-04-14T20:18:57Z
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2010/05/19
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Hi,
I write a simple iPhone web app using HTML5's localStorage.
Tests on a 2G device show that data stored using localStorage does not persist after the Safari process is killed although the opened Safari windows are remembered.
The data is also lost in a case where I am on a different site on a different Safari window, then I change the window to where the web app in subject is shown. When Safari loads the page it automatically refreshes the page. Then the data is lost. This is a simple test code:
<html>
<head>
<meta name="viewport" content="height=device-height, width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
</head>
<body>
<script>
alert("1:" + localStorage.getItem("test"));
localStorage.setItem("test", "123");
alert("2:" + localStorage.getItem("test"));
</script>
</body>
As far as I understand the data should persist!
Can anyone shed some light on this behavior? What should I do to get the persistence to work?
Thanks!
Tom.
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