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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<style>
*{margin:0;paading:0;}
p{padding:6px 0 5px 0;text-align: center;}
label{width:80px;font-weight: bold;font-size:12px;color:grey;display:inline-block;}
button{width:100px;height:35px;border:1px solid #c40000;background-color:#c40000;color:white;margin:20px 100px;}
span{width:80px;height:25px;font-size:12px;line-height: 25px;color:grey;border:1px solid lightgray;display:inline-block;}
.select{border:2px solid #C40000;width: 78px;height: 23px;line-height: 23px;color: red;}
</style>
</head>
<body>
<form action="check.php" method="POST" style="width:380px;height:450px;border:1px solid #c40000;margin:0 auto;">
<p style="background-color:#c40000;color:white;font-size:16px;">请选择信息后加入购物车</p>
<p>
<label>机型</label>
<span>ONE A2001</span>
<span>ONE A0001</span>
<span>ONE A1001</span>
</p>
<p>
<label>机身颜色</label>
<span>白色</span>
<span>黑色</span>
<span>金色</span>
</p>
<p>
<label>套餐类型</label>
<span>标配</span>
<span>套餐一</span>
<span>套餐二</span>
</p>
<p>
<label>运行内存</label>
<span>2GB</span>
<span>3GB</span>
<span>4GB</span>
</p>
<p>
<label>机身内存</label>
<span>16GB</span>
<span>32GB</span>
<span>64GB</span>
</p>
<p>
<label>产地</label>
<span>中国大陆</span>
<span>港澳台</span>
<label></label>
</p>
<p>
<label>价格</label>
<span>999元抢购</span>
<label></label>
<label></label>
</p>
<p>
<label for="sl">数量</label>
<input type="number" style="width:80px;" name="sl"/>
<label></label>
<label></label>
</p>
<button>加入购物车</button>
</form>
<script>
$(function() {
$('span').click(function(){
if($(this).hasClass('select')){ //注意c必须大写，必须引入jquery
$(this).removeClass('select')
}else{
$(this).addClass('select').siblings('span').removeClass('select')
}
})
$('button').click(function(){
var arr1=$('form').find('.label')
var arr2=$('form').find('.select')
for (i=0;i<arr1.length;i++){
console.log(arr1[i].val()+arr2[i].val())
}
})
})
</script>
</body>
</html>点击 "运行实例" 按钮查看在线实例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<style>
*{margin:0 auto;padding:0;}
.content{width:100%;height:60px; background:rgba(160,3,162,0.1);line-height:60px;position:fixed;}
.contentc2{background-color: rgba(94, 4, 95, 0.4);}
form{width:500px;height:20px;}
input{width: 170px;height:20px;border-radius:20px 0px 0px 20px;padding-right:20px;}
button{width: 70px;height:25px;background-color: pink;border-radius:0px 20px 20px 0px;}
[placeholder]{}
.pic{width:1000px;height:500px;background: url(images/3.jpg);}
.box{width:1000px;height:1000px;}
</style>
</head>
<body>
<!-- 顶部导航 -->
<div class="content">
<form>
<input type="text" placeholder="# 请输入关键词 #">
<button>全网搜</button>
</form>
</div>
<!-- 轮播图 -->
<div class="pic"></div>
<!-- 页面详情 -->
<div class="box"></div>
<script>
$(function(){ //注意写法function在括号内,function别拼错
$(window).scroll(function(){
if ($(window).scrollTop()>60){ //window).scrollTop()
$('.content').css('display','none')
}else{
$('.content').css('display','block')
}
if ($(window).scrollTop()>500){
$('.content').addClass('contentc2').css('display','block')//不加点号
}else{
$('.content').removeClass('contentc2')//为什么命名为content2不行，contentc2却可以？
}
})
})
</script>
</body>
</html>点击 "运行实例" 按钮查看在线实例
