I stumbled over an interesting issue when testing the web storage support in Internet Explorer 10 (localStorage and sessionStorage).
Basically, when loading an HTML document from the local drive without using a web server (file:// protocol), these features are not working in Internet Explorer 10.
When you run the following code in Internet Explorer 10:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Web storage test</title>
</head>
<body>
<script type="text/javascript">
if (window.sessionStorage) {
alert("We have session storage!");
}
if (window.localStorage) {
alert("We have local storage!");
}
</script>
</body>
</html>
It will display the alerts only when running from a web server (local or remote) using the http(s):// protocol. When trying to open the file locally without a server, window.localStorage and window.sessionStorage will be unavailable and the alerts will not show.
If you are looking for alternatives, take a look at this stackoverflow post which lists a handfull:
HTML5 Local Storage fallback solutions
Hope this helps someone stumbling upon this issue.
A quick test with current versions of Firefox and Chrome, showed that these browsers do not share this problem.
Coding 4 Life 