学会用bootstrap的modal和carousel

bootstrap框架提供了很多好用的javascript组件，可以很方便的实现常用的js效果，比如点击弹出一个div（modal）、下拉菜单、旋转木马（carousel或slider），非常适合前端不专业的后端程序员使用。下面就来看下modal和carousel如何使用。

modal即点击弹出div的效果，先看下效果图。

代码如下：

 <!DOCTYPE html>

 <html lang="zh">

 <head>

   <title>Bootstrap Example</title>

   <meta charset="utf-8">

   <meta name="viewport" content="width=device-width, initial-scale=1">

   <link rel="stylesheet" href="../../vendor/bootstrap-3.3.7-dist/css/bootstrap.min.css">

   <script src="../../vendor/jquery-3.0.0.min.js"></script>

   <script src="../../vendor/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>

 </head>

 <body>

   <style>

     .prime-img {

       width: 100%;

     }

     .mw {

       width: 300px;

     }

     .box {

       margin: 150px auto;

       text-align: center;

       width: 150px;

     }

   </style>

   <div class="container">

     <div class="box">

       <h4>Modal Example</h2>

       <!-- Trigger the modal with a button -->

       <img data-toggle="modal" data-target="#myModal" class="prime-img" src="../../asset/images/p1.jpg" alt="">

       <h4 class="box-desc">花</h4>

     </div>

     </div>

     <!-- Modal -->

     <div class="modal fade" id="myModal" role="dialog">

       <div class="modal-dialog mw">

         <!-- Modal content-->

         <div class="modal-content">

           <div class="modal-header">

             <button type="button" class="close" data-dismiss="modal">&times;</button>

             <h4 class="modal-title">Modal</h4>

           </div>

           <div class="modal-body">

             <img class="prime-img" src="../../asset/images/p1.jpg" alt="">

             <div>红花娇艳</div>

           </div>

           <div class="modal-footer">

             <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>

           </div>

         </div>

         <!--End Modal content-->

       </div>

     </div>

     <!-- End Modal -->

   </div>

 </body>

 </html>

代码第7-9行是需要引入的css和js，可以看到bootstrap.min.js依赖于jQuery。

第32行中的 data-target="#myModal" 指定了要弹出div的id，第38行开始的id为myModal的div就是弹出的实现。其中可以看到弹出的div内容被包含在.modal-content中，而它又被分成了三个部分，.modal-header、.modal-body、.modal-header。具体在使用时不用拘泥于上面的写法，可以自己定义布局和样式。

再看carousel(也可以叫slider)，即旋转木马，又叫幻灯片或滑块。

看下效果图，箭头可以控制：

按钮也可以控制

看下代码：

 <!DOCTYPE html>

 <html lang="en">

 <head>

   <title>Bootstrap Example</title>

   <meta charset="utf-8">

   <meta name="viewport" content="width=device-width, initial-scale=1">

   <link rel="stylesheet" href="../../vendor/bootstrap-3.3.7-dist/css/bootstrap.min.css">

   <script src="../../vendor/jquery-3.0.0.min.js"></script>

   <script src="../../vendor/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>

   <style>

   .carousel-inner > .item > img,

   .carousel-inner > .item > a > img {

       width: 70%;

       margin: auto;

   }

   </style>

 </head>

 <body>

 <div class="container">

   <br>

   <div id="myCarousel" class="carousel slide" data-ride="carousel">

     <!-- Indicators -->

     <ol class="carousel-indicators">

       <li data-target="#myCarousel" data-slide-to="0" class="active"></li>

       <li data-target="#myCarousel" data-slide-to="1"></li>

       <li data-target="#myCarousel" data-slide-to="2"></li>

       <li data-target="#myCarousel" data-slide-to="3"></li>

     </ol>

     <!-- Wrapper for slides -->

     <div class="carousel-inner" role="listbox">

       <div class="item active">

         <img src="../../asset/images/p1.jpg" alt="花" width="460" height="345">

         <div class="carousel-caption">

           <h3>花</h3>

           <p>红花娇艳</p>

         </div>

       </div>

       <div class="item">

         <img src="../../asset/images/p2.jpg" alt="树" width="460" height="345">

         <div class="carousel-caption">

           <h3>树</h3>

           <p>大木苍翠</p>

         </div>

       </div>

       <div class="item">

         <img src="../../asset/images/p3.jpg" alt="海" width="460" height="345">

         <div class="carousel-caption">

           <h3>海</h3>

           <p>海浪汹涌</p>

         </div>

       </div>

       <div class="item">

         <img src="../../asset/images/p4.jpg" alt="湖" width="460" height="345">

         <div class="carousel-caption">

           <h3>湖</h3>

           <p>晚湖静美</p>

         </div>

       </div>

     </div>

     <!-- Left and right controls -->

     <a class="left carousel-control" href="#myCarousel" role="button" data-slide="prev">

       <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>

       <span class="sr-only">Previous</span>

     </a>

     <a class="right carousel-control" href="#myCarousel" role="button" data-slide="next">

       <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>

       <span class="sr-only">Next</span>

     </a>

   </div>

 </div>

 </body>

 </html>