JSON Strorage

gistfile1.js

var jsonStorage = {
    get: function(key) {
        try {
            return JSON.parse(localStorage.getItem(key)) || null;
        } catch(e) {
            return null;
        }
    },
    set: function(key, value) {
        if (key && undefined !== value) {
            localStorage.setItem(key, JSON.stringify(value));
        } else {
            throw new Error('Error: `key` and/or `value` is undefined');
        }
    },
    remove: function(key) {
        if (key) {
            localStorage.removeItem(key);
        } else {
            throw new Error('Error: `key` and/or `value` is undefined');
        }
    }
}