easyUI拖动购物车案例

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta name="keywords" content="jquery,ui,easy,easyui,web">
    <title>拖动购物车案例</title>
    <link rel="stylesheet" type="text/css" href="js/jquery-easyui/themes/default/easyui.css">
    <link rel="stylesheet" type="text/css" href="js/jquery-easyui/themes/icon.css">
    <script src="js/jquery.min.js" type="text/javascript"></script>
    <script type="text/javascript" src="js/jquery-easyui/jquery.easyui.min.js"></script>
    <style type="text/css">
        .products{
            list-style:none;
            margin-right:300px;
            padding:0px;
            height:100%;
        }
        .products li{
            display:inline;
            float:left;
            margin:10px;
        }
        .item{
            display:block;
            text-decoration:none;
        }
        .item img{
            border:1px solid #333;
        }
        .item p{
            margin:0;
            font-weight:bold;
            text-align:center;
            color:#c3c3c3;
        }
        .cart{
            position:fixed;
            right:0;
            top:0;
            width:300px;
            height:100%;
            background:#ccc;
            padding:0px 10px;
        }
        h1{
            text-align:center;
            color:#555;
        }
        h2{
            position:absolute;
            font-size:16px;
            left:10px;
            bottom:20px;
            color:#555;
        }
        .total{
            margin:0;
            text-align:right;
            padding-right:20px;
        }
    </style>
    <script>
        var data = {"total":0,"rows":[]};
        var totalCost = 0;

        $(function(){
            $('#cartcontent').datagrid({
                singleSelect:true
            });
            //拖动克隆的商品: draggable 属性的值从 'proxy' 设置为 'clone'，所以拖动元素将由克隆产生。
            $('.item').draggable({
                revert:true,
                proxy:'clone',
                onStartDrag:function(){
                    $(this).draggable('options').cursor = 'not-allowed';
                    $(this).draggable('proxy').css('z-index',10);
                },
                onStopDrag:function(){
                    $(this).draggable('options').cursor='move';
                }
            });

            //放置选择商品到购物车中（购物车采用的是datagrid来存储）
            $('.cart').droppable({
                onDragEnter:function(e,source){
                    $(source).draggable('options').cursor='auto';
                },
                onDragLeave:function(e,source){
                    $(source).draggable('options').cursor='not-allowed';
                },
                onDrop:function(e,source){
                    var name = $(source).find('p:eq(0)').html();
                    var price = $(source).find('p:eq(1)').html();
                    addProduct(name, parseFloat(price.split('$')[1]));
                }
            });
        });

//每当放置商品的时候，需要首先得到商品名称和价格，然后调用 'addProduct' 函数来更新购物车。
        function addProduct(name,price){
            function add(){
                for(var i=0; i<data.total; i++){
                    var row = data.rows[i];
                    if (row.name == name){
                        row.quantity += 1;
                        return;
                    }
                }
                data.total += 1;
                data.rows.push({
                    name:name,
                    quantity:1,
                    price:price
                });
            }
            add();
            totalCost += price;
            $('#cartcontent').datagrid('loadData', data);
            $('div.cart .total').html('Total: $'+totalCost);
        }
    </script>
</head>
<body style="margin:0;padding:0;height:100%;background:#fafafa;">
<!--创建商品-->
<ul class="products">
    <li>
        <a href="#" class="item">
            <img src="data:images/shirt1.gif"/>
            <div>
                <p>Balloon</p>
                <p>Price:$25</p>
            </div>
        </a>
    </li>
    <li>
        <a href="#" class="item">
            <img src="data:images/shirt2.gif"/>
            <div>
                <p>Feeling</p>
                <p>Price:$25</p>
            </div>
        </a>
    </li>
    <li>
        <a href="#" class="item">
            <img src="data:images/shirt3.gif"/>
            <div>
                <p>Elephant</p>
                <p>Price:$25</p>
            </div>
        </a>
    </li>
    <li>
        <a href="#" class="item">
            <img src="data:images/shirt4.gif"/>
            <div>
                <p>Stamps</p>
                <p>Price:$25</p>
            </div>
        </a>
    </li>
    <li>
        <a href="#" class="item">
            <img src="data:images/shirt5.gif"/>
            <div>
                <p>Monogram</p>
                <p>Price:$25</p>
            </div>
        </a>
    </li>
    <li>
        <a href="#" class="item">
            <img src="data:images/shirt6.gif"/>
            <div>
                <p>Rolling</p>
                <p>Price:$25</p>
            </div>
        </a>
    </li>
</ul>
<!--创建购物车-->
<div class="cart">
    <h1>Shopping Cart</h1>
    <div style="background:#fff">
        <table id="cartcontent" fitColumns="true" style="width:300px;height:auto;">
            <thead>
            <tr>
                <th field="name" width=140>Name</th>
                <th field="quantity" width=60 align="right">Quantity</th>
                <th field="price" width=60 align="right">Price</th>
            </tr>
            </thead>
        </table>
    </div>
    <p class="total">Total: $0</p>
    <h2>Drop here to add to cart</h2>
</div>
</body>
</html>