html5 拖放购物车

1.本例中模仿了购物车添加的功能
主要运用了ondragstart / ondragover/ ondrag 功能
功能比较简单
遗留问题：火狐下图片拖进会被打开
<!doctype html>

<html>

<head>

<meta charset="utf-8">

<title>无标题文档</title>

<style>

    body,ul,img,p{margin:0;padding:0;}

    li{list-style:none;}

    li{float:left;width:200px;margin:10px;border:1px solid #000;height:300px;}

    li img{width:200px;height:250px;}

     p{height:20px;border-bottom:1px dashed #666;}

    #div1{clear:both;width:600px;height:400px;border:1px solid #000;margin:20px;}

    .box1{float:left;width:200px;}

    .box2{float:left;width:200px;}

    .box3{float:left;width:200px;}

    #allMoney{float:right;}

</style>

<script>

    window.onload = function(){

        var aLi = document.getElementsByTagName('li');

        var oDiv = document.getElementById('div1');

        var obj = {};

        var oMoney = null;

        var iNum = 0;

        for(var i=0;i<aLi.length;i++){

            aLi[i].ondragstart = function(ev){

                var ev = ev || window.event;

                var aP = this.getElementsByTagName('p');

                ev.dataTransfer.setData('title',aP[0].innerHTML);

                ev.dataTransfer.setData('money',aP[1].innerHTML);

                ev.dataTransfer.setDragImage(this,0,0);

            };

        }

        oDiv.ondragover = function(ev){

            var ev = ev || window.event;

            ev.preventDefault(); //如果想要实现drop功能 必须组织默认事件

        };

        oDiv.ondrop = function(ev){

            var ev = ev || window.event;

            ev.preventDefault(); // 阻止图片进来打开

            var sTitle = ev.dataTransfer.getData('title');

            var sMoney = ev.dataTransfer.getData('money');

            if(!obj[sTitle]){

                var oP = document.createElement('p');

                var oSpan = document.createElement('span');

                oSpan.className = 'box1';

                oSpan.innerHTML = 1;

                oP.appendChild(oSpan);

                var oSpan = document.createElement('span');

                oSpan.className = 'box2';

                oSpan.innerHTML = sTitle;

                oP.appendChild(oSpan);

                var oSpan = document.createElement('span');

                oSpan.className = 'box3';

                oSpan.innerHTML = sMoney;

                oP.appendChild(oSpan);

                oDiv.appendChild(oP);

                obj[sTitle] = 1;

            }else{

                var arrBox1 = document.getElementsByClassName('box1');

                var arrBox2 = document.getElementsByClassName('box2');

                for(var i=0;i<arrBox1.length;i++){

                    if(arrBox2[i].innerHTML == sTitle){

                        arrBox1[i].innerHTML = parseInt(arrBox1[i].innerHTML)+1;

                        break;

                    }

                }

            }

            if(!oMoney){

                oMoney = document.createElement('div');

                oMoney.id = 'allMoney';

            }

            iNum += parseInt(sMoney);

            oMoney.innerHTML = iNum +'￥';

            oDiv.appendChild(oMoney);

        };

    };

</script>

</head>

<body>

<ul>

    <li draggable="true">

        <img src="data:image/img1.jpg"/>

        <p>javascript语言精粹</p>

        <p>40￥</p>

    </li>

   <li draggable="true">

        <img src="data:image/img2.jpg"/>

        <p>javascript权威指南</p>

        <p>120￥</p>

    </li>

    <li draggable="true">

        <img src="data:image/img3.jpg"/>

        <p>精通javascript</p>

        <p>50￥</p>

    </li>

    <li draggable="true">

        <img src="data:image/img4.jpg"/>

        <p>DOM编程艺术</p>

        <p>70￥</p>

    </li>

</ul>

<div id="div1">

<!--  <p>

        <span class="box1">1</span>

        <span class="box2">DOM编程艺术</span>

        <span class="box3">45￥</span>

   </p>

   <p>

        <span class="box1">1</span>

        <span class="box2">DOM编程艺术</span>

        <span class="box3">45￥</span>

   </p>

   <p>

        <span class="box1">1</span>

        <span class="box2">DOM编程艺术</span>

        <span class="box3">45￥</span>

   </p>

   <div id="allMoney">90￥</div>-->

</div>

</body>

</html>
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html5 拖放购物车

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