js简易版购物车功能
程序员文章站
2022-06-24 16:58:59
本文实例为大家分享了js购物车功能的具体代码，供大家参考，具体内容如下
<...
本文实例为大家分享了js购物车功能的具体代码，供大家参考，具体内容如下
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
* {
margin: 0;
padding: 0;
}
li {
list-style: none;
}
li {
float: left;
width: 200px;
border: 1px #000 solid;
margin: 10px;
}
li img {
width: 200px;
}
p {
height: 20px;
border-bottom: 1px #333 dashed;
}
#bus {
width: 600px;
border: 1px #000 solid;
height: 300px;
clear: both;
}
.box1 {
float: left;
width: 200px;
}
.box2 {
float: left;
width: 200px;
}
.box3 {
float: left;
width: 200px;
}
#allmoney {
float: right;
}
</style>
<script>
window.onload = function() {
var olist = document.getelementbyid('list');
var ali = olist.getelementsbytagname('li');
var obus = document.getelementbyid('bus');
var obj = {};
var inum = 0;
var allmoney = 0;
for (var i = 0; i < ali.length; i++) {
ali[i].ondragstart = function(ev) {
//点击拖拽元素的时候，就设置数据，以后放到购物车的时候数据就可以传过去了
var ev = ev || window.event;
var ap = this.getelementsbytagname('p');
ev.datatransfer.setdata('title', ap[0].innerhtml);
ev.datatransfer.setdata('price', ap[1].innerhtml);
ev.datatransfer.setdragimage(this, 0, 0);
}
}
obus.ondragover = function(ev) {
//阻止鼠标默认事件
var ev = ev || event;
ev.preventdefault();
};
obus.ondrop = function(ev) {
var ev = ev || event;
var title = ev.datatransfer.getdata('title');
var price = ev.datatransfer.getdata('price');
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 = price;
op.appendchild(ospan);
obus.appendchild(op);
obj[title] = 1;
}else{
var box1 = document.getelementsbyclassname('box1');
var box2 = document.getelementsbyclassname('box2');
for(var i=0;i<box2.length;i++){
if(box2[i].innerhtml == title){
box1[i].innerhtml = parseint(box1[i].innerhtml) + 1;
};
};
};
//总价
if(!allmoney){
allmoney = document.createelement('div');
allmoney.id = 'allmoney';
}
inum += parseint(price);
allmoney.innerhtml = '￥'+inum;
obus.appendchild(allmoney);
};
};
</script>
</head>
<body>
<ul id="list">
<li draggable="true">
<img src="img/img1.jpg" />
<p>javascript语言精粹</p>
<p>40￥</p>
</li>
<li draggable="true">
<img src="img/img2.jpg" />
<p>javascript权威指南</p>
<p>120￥</p>
</li>
<li draggable="true">
<img src="img/img3.jpg" />
<p>精通javascript</p>
<p>35￥</p>
</li>
<li draggable="true">
<img src="img/img4.jpg" />
<p>dom编程艺术</p>
<p>45￥</p>
</ul>
<div id="bus"></div>
</body>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。