予期しないトークン。私はangularjsに新しいです

Question

は、私はデータページが更新だと私はそれを言及することを、私は検索し、stackoverflowのに掲示同様の質問を見つけ、消えている問題を持っているData will disappear after page refresh,

私の工場サービス

app.factory("MoreInfoOnChallengeSvc", ["$window", function ($window) { 
    var data = localStorage.getItem("data")? JSON.parse(localStorage.getItem("data")) || {}; 
    function setChallengeId(id){ 
     data = id; 
     localStorage.setItem("data", JSON.stringify(data)); 
    } 
    function getData(){ 
     return data; 
    } 
    return{ 
    setChallengeId: setChallengeId, 
     getData: getData 
    }; 

}]); 

エラー：

EarnfitApp.js:240 Uncaught SyntaxError: Unexpected token ; 
jquery-migrate-1.1.0.min.js:1'//@ sourceURL' and '//@ sourceMappingURL' are deprecated, please use '//# sourceURL=' and '//# sourceMappingURL=' instead. 
angular.js:68 Uncaught Error: [$injector:modulerr] Failed to instantiate module earnfitApp due to: 
Error: [$injector:nomod] Module 'earnfitApp' is not available! You either misspelled the module name or forgot to load it. If registering a module ensure that you specify the dependencies as the second argument. 
http://errors.angularjs.org/1.5.8/$injector/nomod?p0=earnfitApp 
    at http://localhost:2000/earnfitangular/angular/assets/js/angular.js:68:12 
    at http://localhost:2000/earnfitangular/angular/assets/js/angular.js:2082:17 
    at ensure (http://localhost:2000/earnfitangular/angular/assets/js/angular.js:2006:38) 
    at module (http://localhost:2000/earnfitangular/angular/assets/js/angular.js:2080:14) 
    at http://localhost:2000/earnfitangular/angular/assets/js/angular.js:4617:22 
    at forEach (http://localhost:2000/earnfitangular/angular/assets/js/angular.js:321:20) 
    at loadModules (http://localhost:2000/earnfitangular/angular/assets/js/angular.js:4601:5) 
    at createInjector (http://localhost:2000/earnfitangular/angular/assets/js/angular.js:4523:19) 
    at doBootstrap (http://localhost:2000/earnfitangular/angular/assets/js/angular.js:1758:20) 
    at bootstrap (http://localhost:2000/earnfitangular/angular/assets/js/angular.js:1779:12) 
http://errors.angularjs.org/1.5.8/$injector/modulerr?p0=earnfitApp&p1=Error…t%3A2000%2Fearnfitangular%2Fangular%2Fassets%2Fjs%2Fangular.js%3A1779%3A12) 

私は私が間違っ

Answer 1

をやったのか分からないあなたは三元Oを使用しましたペイエーターの間違った方法。

var data = localStorage.getItem("data") ? JSON.parse(localStorage.getItem("data")) : {}; 

それとも三項演算子なし||パターンを保つ：

var data = JSON.parse(localStorage.getItem("data")) || {}; 

これはJSON.parse(null)戻りnullために動作しますあなたはこのようにそれを使用することができます。