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学会用bootstrap的modal和carousel

2018-06-24 00:45:48来源：未知阅读 ()

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：

 1 <!DOCTYPE html>
 2 <html lang="zh">
 3 <head>
 4   <title>Bootstrap Example</title>
 5   <meta charset="utf-8">
 6   <meta name="viewport" content="width=device-width, initial-scale=1">
 7   <link rel="stylesheet" href="../../vendor/bootstrap-3.3.7-dist/css/bootstrap.min.css">
 8   <script src="../../vendor/jquery-3.0.0.min.js"></script>
 9   <script src="../../vendor/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
10 </head>
11 
12 <body>
13   <style>
14     .prime-img {
15       width: 100%;
16     }
17     .mw {
18       width: 300px;
19     }
20     .box {
21       margin: 150px auto;
22       text-align: center;
23       width: 150px;
24     }
25   </style>
26 
27   <div class="container">
28 
29     <div class="box">
30       <h4>Modal Example</h2>
31       <!-- Trigger the modal with a button -->
32       <img data-toggle="modal" data-target="#myModal" class="prime-img" src="../../asset/images/p1.jpg" alt="">
33       <h4 class="box-desc">花</h4>
34     </div>
35     </div>
36 
37     <!-- Modal -->
38     <div class="modal fade" id="myModal" role="dialog">
39       <div class="modal-dialog mw">
40         <!-- Modal content-->
41         <div class="modal-content">
42           <div class="modal-header">
43             <button type="button" class="close" data-dismiss="modal">&times;</button>
44             <h4 class="modal-title">Modal</h4>
45           </div>
46           <div class="modal-body">
47             <img class="prime-img" src="../../asset/images/p1.jpg" alt="">
48             <div>红花娇艳</div>
49           </div>
50           <div class="modal-footer">
51             <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
52           </div>
53         </div>
54         <!--End Modal content-->
55       </div>
56     </div>
57     <!-- End Modal -->
58   </div>
59 </body>
60 </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：

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4   <title>Bootstrap Example</title>
 5   <meta charset="utf-8">
 6   <meta name="viewport" content="width=device-width, initial-scale=1">
 7   <link rel="stylesheet" href="../../vendor/bootstrap-3.3.7-dist/css/bootstrap.min.css">
 8   <script src="../../vendor/jquery-3.0.0.min.js"></script>
 9   <script src="../../vendor/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
10   <style>
11   .carousel-inner > .item > img,
12   .carousel-inner > .item > a > img {
13       width: 70%;
14       margin: auto;
15   }
16   </style>
17 </head>
18 <body>
19 <div class="container">
20   <br>
21   <div id="myCarousel" class="carousel slide" data-ride="carousel">
22     <!-- Indicators -->
23     <ol class="carousel-indicators">
24       <li data-target="#myCarousel" data-slide-to="0" class="active"></li>
25       <li data-target="#myCarousel" data-slide-to="1"></li>
26       <li data-target="#myCarousel" data-slide-to="2"></li>
27       <li data-target="#myCarousel" data-slide-to="3"></li>
28     </ol>
29 
30     <!-- Wrapper for slides -->
31     <div class="carousel-inner" role="listbox">
32 
33       <div class="item active">
34         <img src="../../asset/images/p1.jpg" alt="花" width="460" height="345">
35         <div class="carousel-caption">
36           <h3>花</h3>
37           <p>红花娇艳</p>
38         </div>
39       </div>
40 
41       <div class="item">
42         <img src="../../asset/images/p2.jpg" alt="树" width="460" height="345">
43         <div class="carousel-caption">
44           <h3>树</h3>
45           <p>大木苍翠</p>
46         </div>
47       </div>
48 
49       <div class="item">
50         <img src="../../asset/images/p3.jpg" alt="海" width="460" height="345">
51         <div class="carousel-caption">
52           <h3>海</h3>
53           <p>海浪汹涌</p>
54         </div>
55       </div>
56 
57       <div class="item">
58         <img src="../../asset/images/p4.jpg" alt="湖" width="460" height="345">
59         <div class="carousel-caption">
60           <h3>湖</h3>
61           <p>晚湖静美</p>
62         </div>
63       </div>
64 
65     </div>
66 
67     <!-- Left and right controls -->
68     <a class="left carousel-control" href="#myCarousel" role="button" data-slide="prev">
69       <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>
70       <span class="sr-only">Previous</span>
71     </a>
72     <a class="right carousel-control" href="#myCarousel" role="button" data-slide="next">
73       <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
74       <span class="sr-only">Next</span>
75     </a>
76   </div>
77 </div>
78 
79 </body>
80 </html>