<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>折叠下拉效果</title>
<style>
*{
margin: 0;
padding: 0;
}
.main{
500px;
margin: 0 auto;
border: 1px solid #ccc;
padding: 8px;
}
h3{
font-size: 16px;
font-weight: normal;
height: 30px;
line-height: 1.5;
background-color: #F6F6F6;
border: 1px solid #c5c5c5;
padding: 2px;
margin-top: -1px;
}
h3 i{
display: inline-block;
12px;
height: 20px;
vertical-align: -28%;
background: url(./images/bg.png) no-repeat;
background-position: 0 0;
}
.on{
background-position: -32px 0;
}
.main div{
border: 1px solid #c5c5c5;
margin-top: -1px;
height: 100px;
display: none;
padding: 2px;
}
.main div:nth-child(2){
display: block;
}
.active{
background: #007FFF;
color: #fff;
}
</style>
</head>
<body>
<div class="main">
<h3 class="active"><i class="on"></i>标题1</h3>
<div>段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1段落1</div>
<h3><i></i>标题2</h3>
<div>段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2段落2</div>
<h3><i></i>标题3</h3>
<div>段落3段落3段落3段落3段落3段落3段落3段落3段落3段落3段落3段落3段落3段落3</div>
<h3><i></i>标题4</h3>
<div>段落4段落4段落4段落4段落4段落4段落4段落4段落4段落4段落4段落4段落4段落4</div>
</div>
<script src="http://cdn.bootcss.com/jquery/1.11.1/jquery.min.js"></script>
<script>
$(function(){
$("h3").click(function(){
var status=$(this).next("div").css("display");
console.log($(this).css("display"));
if (status=="none") {
$(this).addClass("active").next("div").slideDown().siblings('div').slideUp();
$(this).siblings('h3').removeClass('active').find("i").removeClass('on');
$(this).find('i').addClass('on');
}
})
})
</script>
</body>
</html>