how to detect javascript features on Android 1.5

I开发者_C百科'm trying to write a code that can run on Android 1.5 and 2.0.1, but I have issues with the javascript engine used on Android 1.5.

alert(localStorage); just hang on v1.5 while on v2.0.1 it alerts correctly.

is there an unblocking way to do it or to detect the version of Android with javascript?

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I can get the Android version from navigator.userAgent though

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Why not do something like this,

if(window.localStorage) {
    alert(localStorage);
}

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I believe it is possible to overload the alert handler in a WebView. I would write my own based on an alert dialog and see if that works better than the default.