HTML5——购物车

时间：2023-03-09 23:08:37
HTML5——购物车

简要代码：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>无标题文档</title>

<style>

*{ margin:; padding:;}

li{ list-style:none;}

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

li img{ width:200px;}

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

#div1{ width:600px; border:1px # solid; height:300px; clear:both;}

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

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

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

#allMoney{ float:right;}

</style>

</head>

<body>

<!-- 要拖动的书籍 -->

<ul>

    <!-- draggable="true"含义是，div可以允许拖动 -->

    <!-- 下面定义的格式是图片，名词，钱 -->

    <li draggable="true">

        <img src="img1.jpg" />

        <p>javascript语言精粹</p>

        <p>￥</p>

    </li>

    <li draggable="true">

        <img src="img2.jpg" />

        <p>javascript权威指南</p>

        <p>￥</p>

    </li>

    <li draggable="true">

        <img src="img3.jpg" />

        <p>精通javascript</p>

        <p>￥</p>

    </li>

    <li draggable="true">

        <img src="img4.jpg" />

        <p>DOM编程艺术</p>

        <p>￥</p>

    </li>

</ul>

<!-- 拖过来的书籍，这里动态追加，所以把测试文本注释掉 -->

<div id="div1">

    <!--<p>

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

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

        <span class="box3">￥</span>

    </p>

    <p>

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

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

        <span class="box3">￥</span>

    </p>

    <div id="allMoney">￥</div>-->

</div>

</body>

</html>

<script>

window.onload = function(){

    var aLi = document.getElementsByTagName('li');//获取所有的li对象

    var oDiv = document.getElementById('div1');//获取购买区域对象

    var obj = {};

    var iNum = ; //钱：用于计算的

    var allMoney = null;//钱：带单位的

    for(var i=;i<aLi.length;i++){ //遍历li以便给每个li定义拖动事件

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

            var aP = this.getElementsByTagName('p');//获取拖动对象的所有P标签

            //给转移数据以键值对的形式传输过去

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

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

            ev.dataTransfer.setDragImage(this,,);//设置拖动的时候显示的图片

        };

    }

    <!-- dragover在拖拽期间触发,这里是组织浏览器默认事件，浏览器默认拖动图片后打开图片，阻止就不会了 -->

    oDiv.ondragover = function(ev){

        ev.preventDefault();

    };

    <!-- drop在拖拽区域时触发 -->

    oDiv.ondrop = function(ev){

        ev.preventDefault();

        <!-- 获取发送过来的数据 -->

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

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

        if( !obj[sTitle] ){ //空谁不正确，不为空则是正确的

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

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

            oSpan.className = 'box1';

            oSpan.innerHTML = ;

             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] = ;

        }

        else{

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

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

            for(var i=;i<box2.length;i++){

                 if(box2[i].innerHTML == sTitle){

                    box1[i].innerHTML = parseInt(box1[i].innerHTML) + ;

                 }

            }

        }

        if(!allMoney){

            allMoney = document.createElement('div');

            allMoney.id = 'allMoney';

         }

        iNum += parseInt(sMoney);

        allMoney.innerHTML = iNum + '￥';

        oDiv.appendChild( allMoney );

    };

};

</script>

简要截图:

HTML5——购物车

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