Bootstrap历练实例：交替的进度条
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1.0" />
<link rel="stylesheet" href="bootstrap-3.3.5-dist/css/bootstrap.min.css" />
</head>
<body>
<div style="padding:20px;">
<div class="progress">
<div id="div1" class="progress-bar progress-bar-success" aria-valuenow="90" aria-valuemin="0" aria-valuemax="100" style="width:90%"><span class="sr-only">90%完成(成功)</span></div>
</div>
<div class="progress">
<div id="div2" class="progress-bar progress-bar-info" aria-valuenow="70" aria-valuemin="0" aria-valuemax="100" style="width:70%"><span class="sr-only">70%完成(成功)</span></div>
</div>
<div class="progress">
<div id="div3" class="progress-bar progress-bar-warning" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100" style="width:50%"><span class="sr-only">50%完成(成功)</span></div>
</div>
<div class="progress">
<div id="div4" class="progress-bar progress-bar-danger" aria-valuenow="30" aria-valuemin="0" aria-valuemax="100" style="width:30%"><span class="sr-only">30%完成(成功)</span></div>
</div>
<div class="progress progress-striped active">
<div id="div2" class="progress-bar progress-bar-success" aria-valuenow="70" aria-valuemin="0" aria-valuemax="100" style="width:70%" role="progressbar"><span class="sr-only">70%完成(成功)</span></div>
</div>
</div>
<script src="jQuery/jquery-2.1.4.js"></script>
<script src="bootstrap-3.3.5-dist/js/bootstrap.min.js"></script>
</body>
</html>
