我使用 angularJS 拖放创建了一个购物车。当我将商品从目录拖到购物车并放下时,它成功进入购物车,问题是当我将相同的商品拖放到购物车中时,它再次接受产品并将其添加到购物车中。
如何删除这个克隆?
要访问完整的代码,请从这里下载 点击下载 .rar 文件
或者这里是主索引文件的代码,下面的粗体代码是 CSS 和脚本的附件,您可以从上面的 .rar 文件或通过谷歌搜索脚本名称下载相同的版本。
`
<meta charset="utf-8" />
<title>Drag & Drop</title>
**<script src="js/jquery.min.js"></script>**
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1/jquery-ui.min.js">
<script src="http://cdnjs.cloudflare.com/ajax/libs/angular.js/1.0.7/angular.min.js">
**<script src="angular_drag_drop/angular-dragdrop.js"></script>
<link href="assets/css/jquery-ui.css" rel="stylesheet">**
<style>
.thumbnail { height: 280px !important; }
.btn-droppable { width: 180px; height: 30px; padding-left: 4px; }
.btn-draggable { width: 160px; }
.emage { height: 215px; }
h1 { padding: .2em; margin: 0; }
#products { float:left; width: 500px; margin-right: 2em; }
#cart { width: 200px; float: left; margin-top: 1em; }
#cart ol { margin: 0; padding: 1em 0 1em 3em; }
</style>
<script>
$(function() {
$("#catalog").accordion();
});
var App = angular.module('drag-and-drop', ['ngDragDrop']);
App.controller('oneCtrl', function($scope, $timeout) {
$scope.list1 = [{'title': 'Lolcat Shirt'},{'title': 'Cheezeburger Shirt'},{'title': 'Buckit Shirt'}];
$scope.list4 = [];
$scope.hideMe = function() {
$scope.list1 = [{'title': 'Lolcat Shirt'},{'title': 'Cheezeburger Shirt'},{'title': 'Buckit Shirt'}];
return $scope.list4.length > 0;
}
});
</script>
<body ng-controller="oneCtrl">
<div id="products">
<h1 class="ui-widget-header">Products</h1>
<div id="catalog">
<h2><a href="#">T-Shirts</a></h2>
<div data-drop="true" ng-model='list1' jqyoui-droppable="{multiple:true}">
<ul>
<li ng-repeat='item in list1' ng-show="item.title" data-drag="true" data-jqyoui-options="{revert: 'invalid', helper: 'clone'}" ng-model="list1" jqyoui-draggable="{index: {{$index}}, animate: true, placeholder: 'keep'}">{{item.title}} {{list1.length}}
</li>
</ul>
</div>
</div>
</div>
<div id="cart">
<h1 class="ui-widget-header">Shopping Cart</h1>
<div class="ui-widget-content">
<ol data-drop="true" ng-model='list4' jqyoui-droppable="{multiple:true}">
<li ng-repeat="item in list4" ng-show="item.title" data-drag="true" data-jqyoui-options="{revert: 'invalid', helper: 'clone'}" ng-model="list4" jqyoui-draggable="{index: {{$index}},animate:true}">
{{item.title}}
</li>
<li class="placeholder" ng-hide="hideMe()">
Add your items here
</li>
</ol>
</div>
</div>
</body>
</html>`