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<!DOCTYPE html>
<html>
<head>
<title>模拟加入购物车效果</title>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<style type="text/css">
* {margin: 0px auto;padding: 0px;}
.top {width: 402px;height: 35px;line-height: 35px;text-align:center;margin-top: 50px;
background: #C40000;color:#fff;}
.main {width: 400px;height: 400px;border: 1px solid #C40000;}
p {width: 400px;height: 26px;margin-top:10px;}
b {width: 90px;height: 26px;line-height: 26px;text-align: center;font-size: 12px;color:#838383;
border: 1px solid #ccc;float: left;margin-left: 5px;}
span {width: 90px;height: 26px;line-height: 26px;text-align: center;font-size: 12px;color:#838383;
border: 1px solid #ccc;display: block;float: left;margin-left: 5px;}
span:hover {cursor: pointer;}
button {width: 120px;height: 35px;background: #C40000;color: white;border: 0px;}
button:hover {cursor: pointer;}
.notice{border:0px;}
.notice+input{width:60px;margin-left: 6px;text-align: center;}
.on{border: 2px solid #C40000;width: 88px;height: 24px;}
</style>
</head>
<body>
<div class="top">请选择信息后加入购物车</div>
<div class="main">
<p class="item" name="version">
<b class="notice">版本</b>
<span>ONE A2001</span>
<span>ONE A0001</span>
<span>ONE A1001</span>
</p>
<p class="item" name="color">
<b class="notice">机身颜色</b>
<span>白色</span>
<span>黑色</span>
<span>金色</span>
</p>
<p class="item" name="type">
<b class="notice">套餐类型</b>
<span>标配</span>
<span>套餐一</span>
<span>套餐二</span>
</p>
<p class="item" name="ram">
<b class="notice">运行内存</b>
<span>2GB</span>
<span>3GB</span>
<span>4GB</span>
</p>
<p class="item" name="rom">
<b class="notice">机身内存</b>
<span>16GB</span>
<span>32GB</span>
<span>64GB</span>
</p>
<p class="item" name="location">
<b class="notice">产地</b>
<span>中国大陆</span>
<span>港澳台</span>
</p>
<p class="item" name="price">
<b class="notice">价格</b>
<span>999元抢购</span>
</p>
<p class="item1" name="num">
<b class="notice">数量</b>
<input type="number" value="1" >
</p>
<p style="margin-top:30px;margin-left:95px;">
<button class="bu1" id='sub'>加入购物车</button>
</p>
</div>
<script>
$(function(){
$('.item span').click(function(){ //当点击每个span的时候
if($(this).hasClass('on')){ //先检测一下是否选中，是否含有on
$(this).removeClass('on'); //如果有了我就移除on
}else{
$(this).addClass('on').siblings('span').removeClass('on'); // 如果没有on，我就添加上，同事删除同级span的on
}
})
$('#sub').click(function(){
var form = {}; //定义空的form对象，用于储存数据
var flag = true; //初始化能不能加入购物车状态
$('.item').each(function(){ //遍历每个item分类
if($(this).children('span.on').length ==0){ //获取每个item下面的span为on的，长度等于0，说明一个都没选中
flag = false;
}else{
var key = $(this).attr('name'); //键名key，是获取item的name属性的值
var value = $(this).children('span.on').html(); //键值value,是item下有on效果的span的文本
form[key] = value; //储存在form对象里，
}
})
if($('.item1 input').val() <=0){ //获取数量的值，如果小于等于0，返回假
flag = false;
}else{
form['num'] = $('.item1 input').val(); //大于0就储存到form对象里
}
if(flag){
alert("购物车添加成功！"); //flag==true,成功时候提示
}
})
})
</script>
</body>
</html>点击 "运行实例" 按钮查看在线实例