[英]Ionic application error: array.push() is not a function
我创建了一个具有控制器和工厂的应用程序。 我在工厂内部有一个数组,希望将元素的id推送到此数组。 但是,当我尝试将元素推送到数组时,出现一个错误
“ favorites.push不是函数”
您可以在下面找到我的控制器和工厂。 感谢您的阅读: 工厂:
.factory('favoriteFactory',['$resource', 'baseURL','$localStorage', function ($resource, baseURL, $localStorage) {
var favFac = {};
var favorites = $localStorage.get('favorites', []);
favFac.addFavorites = function (index) {
for(var i=0; i<favorites.length; i++){
if(favorites[i].id == index)
return
}
favorites.push({id: index});
$localStorage.storeObject('favorites',favorites)
}
favFac.deleteFromFavorites = function (index) {
for (var i = 0; i < favorites.length; i++) {
if (favorites[i].id == index) {
favorites.splice(i, 1);
}
}
$localStorage.storeObject('favorites', favorites)
};
favFac.getFavorites = function () {
return $localStorage.getObject('favorites',[]);
};
return favFac
}])
控制器:
.controller('MenuController', ['$scope', 'menuFactory', 'favoriteFactory','baseURL', '$ionicListDelegate', 'dishes', '$localStorage',
function($scope, menuFactory,favoriteFactory, baseURL, $ionicListDelegate, dishes, $localStorage) {
$scope.baseURL = baseURL;
$scope.tab = 1;
$scope.filtText = '';
$scope.showDetails = false;
$scope.showMenu = true;
$scope.message = "Loading ...";
$scope.addFavorite = function (index) {
console.log("index:" +index);
favoriteFactory.addFavorites(index);
$ionicListDelegate.closeOptionButtons();
};
$scope.dishes = dishes;
$scope.select = function(setTab) {
$scope.tab = setTab;
if (setTab === 2) {
$scope.filtText = "appetizer";
}
else if (setTab === 3) {
$scope.filtText = "mains";
}
else if (setTab === 4) {
$scope.filtText = "dessert";
}
else {
$scope.filtText = "";
}
};
$scope.isSelected = function (checkTab) {
return ($scope.tab === checkTab);
};
$scope.toggleDetails = function() {
$scope.showDetails = !$scope.showDetails;
};
}])
我假设您正在使用ngStorage
。 get方法没有第二个参数。 因此,您尝试返回默认值[]
(空数组)只是返回undefined
,然后您尝试将其推入undefined
而不是数组。
ngStorage
的源代码没有显示get
第二个参数: https : //github.com/gsklee/ngStorage/blob/master/ngStorage.js
所以这行:
var favorites = $localStorage.get('favorites', []);
应该是这样的:
var favorites = $localStorage.get('favorites') || [];
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