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购物车
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script type="text/javascript" src="http://libs.baidu.com/jquery/1.9.0/jquery.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;}
.select{border: 2px solid #ff0000;
width: 88px;height: 24px;
color: #ff0000;
line-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(){
$('span').click(function(){
if($(this).hasClass('select')){//匹配span中是否带有class为select
$(this).removeClass('select');//含有就清除
}else{
$(this).addClass('select').siblings('span').removeClass('select');
}//没有就添加上select的class名，同时匹配同级span，清除同级其他span中的选中样式
})
})
$('#sub').click(function(){
var form={};
var flag=true;
$('.item').each(function(){//each() 方法规定为每个匹配元素规定运行的函数
if($(this).children('span.select').length !=1){
flag=false;
}else{//form={键:值}
var key=$(this).attr('name')//获取当前p标签的 name属性值 不同的p属性名不一样
var value=$(this).children('span.select').html()
form[key]=value;//键值对一一对应
}
// console.log(form);
})
if($('.item1 input').val()<=0){
flag=false;
}else{
form['num']=$('.item1 input').val()
// console.log(form)
}
if (flag) {
alert('加入购物车!')
}
})
</script>
</body>
</html>点击 "运行实例" 按钮查看在线实例
总结
先写html，在写css
在head引入jquery
用jq选择器选择到节点，用 if 点击判断 如果有select 那么就removeclass select；如果没有那么就addclass
最后下面写判断是否勾选