Check if localStorage is available

by

Use modernizr‘s approach:

function isLocalStorageAvailable(){
    var test="test";
    try {
        localStorage.setItem(test, test);
        localStorage.removeItem(test);
        return true;
    } catch(e) {
        return false;
    }
}

if(isLocalStorageAvailable()){
    // available
}else{
    // unavailable
}

It’s not as concise as other methods but that’s because it’s designed to maximise compatibility.

The original source: https://github.com/Modernizr/Modernizr/blob/master/feature-detects/storage/localstorage.js

Working example: http://jsfiddle.net/6sm54/2/

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