if (window.Storage) {

Storage.prototype.setObject = function(key, value) {
    this.setItem(key, JSON.stringify(value));
}
 
Storage.prototype.getObject = function(key) {
    try {
        return JSON.parse(this.getItem(key));
    }
    catch(e) {
        return null;
    }
}

}

Provides getter/setter functionality for objects in local storage. Utilizes JSON.stringify and JSON.parse.

Augment Storage Prototype with getObject, setObject

JavaScript