错误：[$ injector：undef] Provider''必须从$ get factory方法返回一个值

Question

我正在努力学习AngularJS。 在我跟随导师的时候，我写了与他相同的代码。 但我得到一个Error: [$injector:undef] Provider 'eliteApi' must return a value from $get factory method. 。 当我在网络中搜索此错误时，会告诉我必须返回一个函数或一个对象。 我想我在做。 我的工厂声明如下：

 angular.module("eliteApp",["ionic"]) .factory('eliteApi', function() { function eliteApi(){ var leagues = JSON.parse('"name": "Spring Fling Tournament 2014","id": 2009,"homeScreen": "* 5th Grade Championship - 7:30m MAC 3\\n* 6th Grade Championship - 6:30pm MAC 4\\n* 7th Grade White Championship - 7:30pm MAC 4\\n* 7th Grade Green Championship - 7:30pm MAC 2\\n* 8th Grade Championship - 7:30pm MAC 1\\n* 9th Grade Championship - 8:30pm MAC 4\\n* 10th Grade Championship - 8:30pm MAC 1\\n* 11th Grade Championship - 8:30pm MAC 3","rulesScreen": null'); function getLeagues(){ return leagues; } return { getLeagues : getLeagues }; }; }) .controller('LeaguesCtrl', [ '$scope','eliteApi', function($scope, eliteApi) { function LeaguesCtrl(eliteApi){ var vm = this ; var leagues = eliteApi.getLeagues(); }; }]) 

任何帮助表示赞赏......

Answer 1

将您的factory更改为：

.factory('eliteApi', [function() {

 return {
          getLeagues : function(){
                           var leagues = JSON.parse({"name": "Spring Fling Tournament 2014","id": 2009,"homeScreen": "* 5th Grade Championship - 7:30m MAC 3\n* 6th Grade Championship - 6:30pm MAC 4\n* 7th Grade White Championship - 7:30pm MAC 4\n* 7th Grade Green Championship - 7:30pm MAC 2\n* 8th Grade Championship - 7:30pm MAC 1\n* 9th Grade Championship - 8:30pm MAC 4\n* 10th Grade Championship - 8:30pm MAC 1\n* 11th Grade Championship - 8:30pm MAC 3","rulesScreen": null});
                           return leagues;
                       }
        }
}])

看看这是否有效。

UPDATE

你的变量league不是一个合适的JSON 。 将其更改为

 var leagues = JSON.parse({"name": "Spring Fling Tournament 2014","id": 2009,"homeScreen": "* 5th Grade Championship - 7:30m MAC 3\n* 6th Grade Championship - 6:30pm MAC 4\n* 7th Grade White Championship - 7:30pm MAC 4\n* 7th Grade Green Championship - 7:30pm MAC 2\n* 8th Grade Championship - 7:30pm MAC 1\n* 9th Grade Championship - 8:30pm MAC 4\n* 10th Grade Championship - 8:30pm MAC 1\n* 11th Grade Championship - 8:30pm MAC 3","rulesScreen": null});

你忘记了{} 。 同时删除引号' 。

Answer 2

@ Sourabh-谢谢你的帮助，这是解决方案：

 .factory('eliteApi', function() { var leagues1 = JSON.stringify({"name": "Spring Fling Tournament 2014","id": 2009,"homeScreen": "* 5th Grade Championship - 7:30m MAC 3\\n* 6th Grade Championship - 6:30pm MAC 4\\n* 7th Grade White Championship - 7:30pm MAC 4\\n* 7th Grade Green Championship - 7:30pm MAC 2\\n* 8th Grade Championship - 7:30pm MAC 1\\n* 9th Grade Championship - 8:30pm MAC 4\\n* 10th Grade Championship - 8:30pm MAC 1\\n* 11th Grade Championship - 8:30pm MAC 3","rulesScreen": null}); var leagues = JSON.parse(leagues1); return { getLeagues : function getLeagues(){ return leagues; } }; }) .controller('LeaguesCtrl', [ '$scope','eliteApi', function($scope, eliteApi) { var leagues = eliteApi.getLeagues(); var leagueData = eliteApi.getLeaguesData(); })