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商品呢拖拽到购物车,appendChild的剪切功能

今天来到了妙味课堂的html5课程的第2张的第8节,讲的是把商品拖拽到购物车的演示。其中有一个关于appendChild的使用,,每次拖拽都会触发这个方法,但是每次之后,却还是只有一个总价,好吧,说不清楚,一起来看程序:

<!doctype html><html lang="en"><head>    <meta charset="UTF-8">    <title>拖拽购物车</title>    <style>    *{ margin:0;padding:0;}    li{ list-style: none;}    li{ float: left;width: 200px;border:1px #000 solid;margin:10px; }    li img{ width:250px; height: 300px;}    li p,    #div1 p{ border-bottom: 1px dashed #000;}        #div1 { width:900px;height:400px;border:1px #000 solid; clear:both;}    #div1 .box1{ width:left;width:200px;}    #div1 .box2{ width:left;width:200px;}    #div1 .box3{ width:left;width:200px;}    #div1 span{ margin-left:30px;}    #allMoney{float:right; font-size:28px;}    </style></head><body>    <ul>        <li draggable="true">            <img src="http://2a.zol-img.com.cn/article/11_120x90/742/liyoKyAnvblM.jpg" alt="">            <p>zol商品1</p>            <p>32.5</p>        </li>        <li draggable="true">            <img src="http://2a.zol-img.com.cn/article/11_120x90/742/liyoKyAnvblM.jpg" alt="">            <p>zol商品2</p>            <p>32.5</p>        </li>        <li draggable="true">            <img src="http://2a.zol-img.com.cn/article/11_120x90/742/liyoKyAnvblM.jpg" alt="">            <p>zol商品3</p>            <p>32.5</p>        </li>    </ul>    <div id="div1">        <!--<p>            <span class="box1">1</span>            <span class="box2">商品1</span>            <span class="box3">45</span>        </p>        <p>            <span class="box1">2</span>            <span class="box2">商品2</span>            <span class="box3">45</span>        </p>        <p>            <span class="box1">3</span>            <span class="box2">商品3</span>            <span class="box3">45</span>        </p>        <div id="allMoney">90元</div>        -->    </div>    <script>    window.onload = function(){        var aLi = document.getElementsByTagName(li);        var obj = {};        var allMoney = null;        var sum = 0;        oDiv = document.getElementById(div1);        for(var i=0,max=aLi.length;i<max;i++){            aLi[i].ondragstart = function(ev){                var aP = this.getElementsByTagName(p);                //alert(aP.length);                ev.dataTransfer.setData(title,aP[0].innerHTML);                ev.dataTransfer.setData(money,aP[1].innerHTML);                ev.dataTransfer.setDragImage(this,0,0);                //ev.preventDefault();//阻止默认事件            };        }        oDiv.ondragover = function(ev){            ev.preventDefault();//阻止默认事件        };        oDiv.ondrop = function(ev){            ev.preventDefault();//阻止默认事件            var title = ev.dataTransfer.getData(title);            var money = ev.dataTransfer.getData(money);            if(!obj[title]){                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 = title;                oP.appendChild(oSpan);                var oSpan = document.createElement(span);                oSpan.className = box3;                oSpan.innerHTML = money;                oP.appendChild(oSpan);                oDiv.appendChild(oP);                obj[title] = true;                            }else{                var box1 = document.getElementsByClassName(box1);                var box2 = document.getElementsByClassName(box2);                for(var i=0,max = box2.length;i<max;i++){                    if(box2[i].innerHTML == title){                        box1[i].innerHTML = parseInt(box1[i].innerHTML)+1;                    }                }            }            if(!allMoney){                allMoney = document.createElement(div);                allMoney.id = allMoney;            }            sum += Number(money);            allMoney.innerHTML = sum+;            oDiv.appendChild(allMoney);//apendChild的剪切功能        };                    };    </script></body></html>

 

商品呢拖拽到购物车,appendChild的剪切功能