angularjs 本地数据存储LocalStorage

//=========本地存储数据服务============
    app.factory('locals', ['$window', function ($window) {
        return {        //存储单个属性
            set: function (key, value) {
                $window.localStorage[key] = value;
            },        //读取单个属性
            get: function (key, defaultValue) {
                return $window.localStorage[key] || defaultValue;
            },        //存储对象，以JSON格式存储
            setObject: function (key, value) {
                $window.localStorage[key] = JSON.stringify(value);//将对象以字符串保存
            },        //读取对象
            getObject: function (key) {
                return JSON.parse($window.localStorage[key] || '{}');//获取字符串并解析成对象
            }

        }
    }]);

app.controller('supplyAddCtrl', function ($scope, $http, $location, locals, $timeout, $compile) {

   //存
     locals.set("firstpos", firstpos);//字符串
     locals.setObject("secondpos", secondpos);//对象

   //取
    locals.get("firstpos");
    locals.getObject("secondpos");
   }