jQuery练习题HTML文件
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery选择器筛选器练习</title>
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
<link href="https://cdn.bootcss.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<style>
.my-padding {
padding: 10px 0;
}
.my-dark {
background-color: #f5f5f5;
}
.footer {
background: #111;
font-size: 0.9em;
position: relative;
clear: both;
}
.my-white {
color: #ffffff;
}
body {
margin: 0;
}
#progress {
height: 2px;
background-color: #b91f1f;
transition: opacity 500ms linear;
}
#progress.done{
opacity: 0;
}
</style>
</head>
<body>
<div id="progress"></div>
<!--导航栏开始-->
<nav class="navbar navbar-inverse my-nav">
<div class="container">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="http://www.oldboyedu.com/"><strong>OldBoy Edu</strong></a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li><a href="#">Python学院<span class="sr-only">(current)</span></a></li>
<li><a href="#">Linux学院</a></li>
<li><a href="http://luffy.oldboyedu.com">路飞学城</a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li><a href="#">好好学习</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">联系我们<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Rain</a></li>
<li><a href="#">Egon</a></li>
<li><a href="#">Yuan</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Q1mi</a></li>
</ul>
</li>
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>
<!--导航栏结束-->
<div class="container">
<div class="jumbotron">
<div id="j1" class="container">
<h1 class="c1">沙河前端小王子</h1>
<