Question

我一直在尝试使用localStorage支持在angularJS中重写shoppingcart脚本，这样他们的数组将在刷新或切换到另一个页面后继续存在。但是，我似乎无法弄清楚我做错了什么。

<script>
angular.module('appname', ['ngStorage'])
    .controller('CartController', ['$scope', function CartController($scope, $localStorage, $sessionStorage) {

    if ($localStorage.items === undefined) {
        $localStorage.items = [];
    }

    $scope.addToCart = function(index, title, desc, price) {
        var found = false;
        angular.forEach($localStorage.items, function(items) {
            if (items.id  === index) {
                items.quantity++;
                found = true;
            }
        });
        if (!found) {
            $localStorage.items.push(angular.extend({id: index, title: title, quantity: 1, price: price}, index));
        }
    };

    $scope.remove = function(index) {
        $localStorage.items.splice(index, 1);
    };
}])
</script>

当我为$ scope.items替换所有$ localStorage.items时，该网站工作正常，但没有localStorage支持。我做错了什么？

错误：

TypeError：无法读取未定义的属性“items” 在新的CartController（page.php：604） at Object.invoke（angular.js：4604）在T.instance（angular.js：9855）在你（angular.js：8927）在g（angular.js：8226）在g（angular.js：8229）在angular.js：8106 在angular.js：1696 at m。$ eval（angular.js：16820） at m。$ apply（angular.js：16920）

更新1

HTML

<!DOCTYPE html>
<html ng-app="appname">

  <head>
    <link rel="stylesheet" href="style.css">
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.0/angular.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/ngStorage/0.3.6/ngStorage.min.js"></script>
    <script src="script.js"></script>
  </head>

<body ng-controller="CartController">
<a href="javascript:void(0);" ng-click="addToCart(1,'x','y','5.00');">Toevoegen</a>

<div ng-repeat='item in items'>
{{item.title}}
{{item.price | currency:"&euro;"}}
{{item.price * item.quantity | currency:"&euro;"}}
</div>

</body>
</html>

JS

<script>
angular.module('appname', ['ngStorage'])
    .controller('CartController', ['$scope, $localStorage, $sessionStorage', function CartController($scope, $localStorage, $sessionStorage) {

    if ($localStorage.items === undefined) {
        $localStorage.items = [];
    }

    $scope.remove = function(index) {
      $localStorage.items.splice(index, 1);
    };

    $scope.addToCart = function(index, title, desc, price) {
        var found = false;
        angular.forEach($localStorage.items, function(items) {
            if (items.id  === index) {
                items.quantity++;
                found = true;
            }
        });
        if (!found) {
            $localStorage.items.push(angular.extend({id: index, title: title, quantity: 1, price: price}, index));
        }
    };
  }])
</script>

由于

Answer 1

替换

    .controller('CartController', ['$scope', function CartController($scope, $localStorage, $sessionStorage) {

与

    .controller('CartController', ['$scope', '$localStorage', '$sessionStorage', function CartController($scope, $localStorage, $sessionStorage) {

这些变量未在您的示例中注入。尝试使用像ng-annotate这样的工具来确保不再发生这种情况！

Answer 2

通过执行以下操作解决了这个问题：

///<reference path="typings/angularjs/angular.d.ts" />
///<reference path="scopes.d.ts" />

import "jquery";
import "angular";

class RegisterController {
   constructor($scope: ng.IRegisterScope) {
   }
}

export = RegisterController;

现在它按预期工作。

重写我的angularJS脚本以支持localStorage

2 个答案: