AngularJS service for HTML5 localStorage

ngLocalStorage.js

'use strict'

angular.module('app.datosLocalesService', [])
.service('DatosLocalesService', function() {

    return {

        isAvalaible: function(){
            if(typeof(Storage)!=="undefined")
            {
                return true;
            }
            else
            {
                return false;
            }

        },

        getItem: function(key) {

            return JSON.parse(localStorage.getItem(key));

        },

        setItem: function(key, value){

            return localStorage.setItem(key, JSON.stringify(value));

        },

        getItemById: function(id, key){
            
            var input = JSON.parse(localStorage.getItem(key));
            
            var i=0, len=input.length;
            for (; i<len; i++) {
                
                if (input[i].objectId === id) {
                    console.log('encontrado!!!');
                    return input[i];
                }
            }
            return null;
        }

    }
});