Bootstrap，來自 Twitter，是目前最受歡迎的前端框架。Bootstrap 是基於 HTML、CSS、JAVASCRIPT 的，它簡潔靈活，使得 Web 開發更加快捷。
接下來我們基於bootstrap來實現輪播圖的功能。
話不多說，來看代碼演示：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>輪播圖</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script>
<script src="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<br>
<br>
<div class="row">
<div class="col-md-12">
<div class="carousel slide" id="carousel-example-generic" data-ride="carousel" data-interval="1500">
<ol class="carousel-indicators">
<li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
<li data-target="#carousel-example-generic" data-slide-to="1"></li>
<li data-target="#carousel-example-generic" data-slide-to="2"></li>
<li data-target="#carousel-example-generic" data-slide-to="3"></li>
</ol>
<div class="carousel-inner">
<div class="item active">
<img src="./images/15.jpg">
</div>
<div class="item">
<img src="./images/6.jpg">
</div>
<div class="item">
<img src="./images/4.jpg">
</div>
<div class="item">
<img src="./images/9.jpg">
</div>
</div>
<a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left"></span>
</a>
<a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
<span class="glyphicon glyphicon-chevron-right"></span>
</a>
</div>
</div>
</div>
</div>
</body>
</html>
對比使用純js做出來的輪播圖要簡單得多啊。