this helps with saving and retriving values other than strings from localStorage.

localStorage.js

Storage.prototype.getItem = function(key) {
    try {
        return JSON.parse(this[key]);
    } catch (error) {}
    return this[key];
}

Storage.prototype.setItem = function(key, value) {
    this[key] = (typeof value == 'string') ? value : JSON.stringify(value);
}