Question

我正面临在AngularJS中存储到本地存储的问题。我正在使用Ionic Framework开发电子商务移动应用程序并使用ng-repeat显示产品数据。每个离子项都有产品详细信息和一个与TodoController中的addItem（）相关联的按钮。单击该按钮，产品数据将存储到本地存储中。但是，问题在于，每当我点击一系列按钮时，只有按下该按钮的最后一个产品才会存储在本地存储中，并且之前点击的按钮的数据不会。

<a class="item item-thumbnail-left" href="#">
        <img ng-src={{product.featured_image.source}}>
        <div class="row">
            <div class="col">
                <h3><span ng-bind="product.ID"></span></h3>
                <h3><span ng-bind="product.title"></span></h3>
            </div>
        </div>
        <div class="row">
            <div class="col">
                <p>{{product.meta_fields.woo.currency_symbol}}{{product.meta_fields.woo.price}}</p>
            </div>
        </div>

        <div class="row">
            <div class="col">
                <p>Qty</p>              
                    <select ng-init="quantity = '1'" ng-model="quantity">
                        <option value="1">1</option>
                        <option value="2">2</option>
                        <option value="3">3</option>
                        <option value="4">4</option>
                        <option value="5">5</option>
                        <option value="6">6</option>
                        <option value="7">7</option>
                        <option value="8">8</option>
                        <option value="9">9</option>
                        <option value="10">10</option>
                        <option value="11">11</option>
                        <option value="12">12</option>
                        <option value="13">13</option>
                        <option value="14">14</option>
                        <option value="15">15</option>
                    </select>
                </div>
          <div class="col"></div>
         <div class="col" ng-controller="TodoController">
            <button ng-click="addItem(product.ID, product.title,none , product.meta_fields.woo.price,  quantity)">Add Me</button>
            </div>
       </div>
    </a>

控制器

.controller('TodoController', function($scope) {


  $scope.saved = localStorage.getItem('todos');
  $scope.todos = (localStorage.getItem('todos')!==null) ? JSON.parse($scope.saved) : [];
  localStorage.setItem('todos', JSON.stringify($scope.todos));


   $scope.addItem = function (id,item,size,price,quantity) {
        $scope.todos.push({id,item,size,price,quantity});
        localStorage.setItem('todos', JSON.stringify($scope.todos));
    }

})

Answer 1

问题出在您的控制器中，您只传递没有键的对象中的值。你需要修改$ scope.addItem函数

   $scope.addItem = function(id, item, size, price, quantity) {
    $scope.todos.push({
      id: id,
      item: item,
      size: size,
      price: price,
      quantity: quantity
    });
    localStorage.setItem('todos', JSON.stringify($scope.todos));
  }

此外，我为您创建了一个plunker示例，请查看http://plnkr.co/edit/3Uzj0Zz9TVYftjFyEGv4?p=preview

Answer 2

确保您没有字符串＆＃39; undefined＆＃39;或者在localStorage中未定义：

$scope.todos = (localStorage.getItem('todos')!==null && 
                localStorage.getItem('todos')!=='undefined') ? JSON.parse($scope.saved) : [];

AngularJS本地存储只存储最后一项

2 个答案: