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Bootstrap概念

1. 概念: 一个前端开发的框架,Bootstrap,来自 Twitter,是目前很受欢迎的前端框架。Bootstrap 是基于 HTML、CSS、JavaScript 的,它简洁灵活,使得 Web 开发更加快捷。 框架:一个半成品软件,开

  1. 概念: 一个前端开发的框架,Bootstrap,来自 Twitter,是目前很受欢迎的前端框架。Bootstrap 是基于 HTML、CSS、JavaScript 的,它简洁灵活,使得 Web 开发更加快捷。

框架:一个半成品软件,开发人员可以在框架基础上,在进行开发,简化编码。

好处:

  1. 定义了很多的css样式和js插件。我们开发人员直接可以使用这些样式和插件得到丰富的页面效果。

  2. 响应式布局。

同一套页面可以兼容不同分辨率的设备。 例如:http://m.taobao.comhttps://www.apple.com/

https://www.bootcss.com 官网

快速入门

下载Bootstrap

在项目中将这三个文件夹复制

min压缩版,上线之后一般用的压缩版

引入资源文件

手动引入jquery-3.2.1.min.js

根据参考文档找到基本模版 注意:引入文件的顺序问题

<!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">

  <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->

  <title>Bootstrap 入门 </title>

  <!--引入Bootstrap相关的3个文件 -->

  <link href="css/bootstrap.min.css" rel="stylesheet">

</head>

<body>

<h1>你好,世界!</h1>

<script src="js/jquery-3.2.1.min.js"></script>

<script src="js/bootstrap.min.js"></script>

</body>

</html>

响应式布局

同一套页面可以兼容不同分辨率的设备。

实现:依赖于栅格系统:将一行平均分成12个格子,可以指定元素占几个格子

栅格系统:

  1. 定义容器。相当于之前的table、

容器分类:

  1. container :两边留白

  2. container-fluid:每一种设备都是100%宽度

  3. 定义行。相当于之前的tr 样式:row

  4. 定义元素。指定该元素在不同的设备上,所占的格子数目。样式:col-设备代号-格子数目

设备代号:

  1. xs:超小屏幕 手机 (<768px):col-xs-12

  2. sm:小屏幕 平板 (≥768px)

  3. md:中等屏幕 桌面显示器 (≥992px)

  4. lg:大屏幕 大桌面显示器 (≥1200px)

<!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">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>Bootstrap 101 Template</title>

    <!-- Bootstrap -->
    <link rel="stylesheet" href="css/bootstrap.min.css">
	
	 <style>
	   .row div {
	      border: 1px solid red;
	    }
	  </style>
	  
  </head>
  <body>
	  
	  <!-- 定义容器-->
	  <div class="container">
		<!-- 定义行 -->
	  	<div class="row">
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	  <div class="col-md-1">.col-md-1</div>
	  	</div>
	  	<div class="row">
	  	  <div class="col-md-8">.col-md-8</div>
	  	  <div class="col-md-4">.col-md-4</div>
	  	</div>
	  	<div class="row">
	  	  <div class="col-md-4">.col-md-4</div>
	  	  <div class="col-md-4">.col-md-4</div>
	  	  <div class="col-md-4">.col-md-4</div>
	  	</div>
	  	<div class="row">
	  	  <div class="col-md-6">.col-md-6</div>
	  	  <div class="col-md-6">.col-md-6</div>
	  	</div>
	  </div>
	  
  

    <!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery,所以必须放在前边) -->
    <script src="js/jquery-3.4.1.js"></script>
    <!-- 加载 Bootstrap 的所有 JavaScript 插件。你也可以根据需要只加载单个插件。 -->
    <script src="hs/bootstrap.min.js" crossorigin="anonymous"></script>
  </body>
</html>

注意:

  1. container留白
  2. 一行中如果格子数目超过12,则超出部分自动换行。
  3. 栅格类属性可以向上兼容。栅格类适用于与屏幕宽度大于或等于分界点大小的设备。.col-xs –>向上兼容

4. 如果真实设备宽度小于了设置栅格类属性的设备代码的最小值,缩小会一个元素沾满一整行。

列偏移

<!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">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>入门</title>

    <!-- bootstrap.min.css -->
    <link rel="stylesheet" href="css/bootstrap.min.css">
	<style>
		.row div{
			border: 1px solid green;
		}
	</style>
  </head>
  <body>
	  
	  <!-- 定义容器-->
	  <div class="container-fluid">
		  <!-- 第一行-->
		  <div class="row">
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
			 <div class="col-md-1">江一燕</div>
		  </div>
		  <!-- 列偏移-->
		  <div class="row">
			  <div class="col-md-4">col-md-4</div>
			  <div class="col-md-4 col-md-offset-4">col-md-4</div>
		  </div>
		  <!-- 列偏移-->
		  <div class="row">
			  <div class="col-md-3">col-md-3</div>
			  <div class="col-md-3 col-md-offset-6">col-md-3 col-md-offset-6</div>
		  </div>
		  <!-- 列偏移-->
		  <div class="row">
			  <div class="col-md-2 col-md-offset-4">col-md-2 col-md-offset-4</div>
			  <div class="col-md-6">col-md-6</div>
		  </div>
	  </div>
	
   

    <!-- 引入jQuery -->
    <script src="js/jquery-3.4.1.js"></script>
    <!-- js/bootstrap.min.js -->
    <script src="js/bootstrap.min.js"></script>
  </body>
</html>

CSS样式和JS插件

按钮

按钮:class="btn btn-default"

<!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">
      <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
      <title>Bootstrap 101 Template</title>
      <!--引入Bootstrap相关的3个文件 -->
      <link href="css/bootstrap.min.css" rel="stylesheet">
      <script src="js/jquery-3.2.1.min.js"></script>
      <script src="js/bootstrap.min.js"></script>
</head>
<body>
    <a class="btn btn-default" href="#" role="button">Link</a>
    <button class="btn btn-default" type="submit">Button</button>
    <input class="btn btn-default" type="button" value="Input">
    <input class="btn btn-default" type="submit" value="Submit">
    <Hr>
    <button type="button" class="btn btn-default">(默认样式)Default</button>
    <button type="button" class="btn btn-primary">(首选项)Primary</button>
    <button type="button" class="btn btn-success">(成功)Success</button>
    <button type="button" class="btn btn-info">(一般信息)Info</button>
    <button type="button" class="btn btn-warning">(警告)Warning</button>
    <button type="button" class="btn btn-danger">(危险)Danger</button>
    <button type="button" class="btn btn-link">(链接)Link</button>
</body>
</html>

图片

class="img-responsive":图片在任意尺寸都占100%

图片形状

<img src="..." alt="..." class="img-rounded">:方形

<img src="..." alt="..." class="img-circle"> : 圆形

<img src="..." alt="..." class="img-thumbnail"> :相框
<!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">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>Bootstrap 101 Template</title>
    <!--引入Bootstrap相关的3个文件 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <script src="js/jquery-3.2.1.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
<style>
      img{
        width: 450px;
      }
   </style>
</head>
<body>
    <img src="img/banner_1.jpg" class="img-responsive" alt="Responsive image">
    <!--设置图片的样式  img-responsive 占100%-->
    <!--正方型-->
    <img src="img/banner_1.jpg" class="img-responsive img-rounded" alt="Responsive image">
    
    <!--相框型-->
    <img src="img/banner_1.jpg" class="img-responsive img-thumbnail" alt="Responsive image">
    
    <!--圆型型-->
    <img src="img/banner_1.jpg" class="img-responsive img-circle" alt="Responsive image">
</body>
</html>

表格

table 表格

table-bordered 边框

table-hover 鼠标悬停

<!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">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>Bootstrap 101 Template</title>
    <!--引入Bootstrap相关的3个文件 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <script src="js/jquery-3.2.1.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
</head>
<body>

<div class="container">
<table class="table table-bordered table-hover">
    <tr>
        <th>编号</th>
        <th>姓名</th>
        <th>年龄</th>
    </tr>
    <tr>
        <td>001</td>
        <td>张三</td>
        <td>23</td>
    </tr>
    <tr>
        <td>002</td>
        <td>张三</td>
        <td>23</td>
    </tr>
    <tr>
        <td>002</td>
        <td>张三</td>
        <td>23</td>
    </tr>
</table>
</div>
</body>
</html>

表单

给表单项添加:class="form-control"

<!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">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>Bootstrap 101 Template</title>
    <!--引入Bootstrap相关的3个文件 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <script src="js/jquery-3.2.1.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
<style>
    .form-control{
        width: 400px;
    }
</style>

</head>
<body>
<form class="form-horizontal">
    <div class="form-group">
        <label for="inputEmail3" class="col-sm-2 control-label">Email</label>
        <div class="col-sm-10">
            <input type="email" class="form-control" id="inputEmail3" placeholder="Email">
        </div>
    </div>
    <div class="form-group">
        <label for="inputPassword3" class="col-sm-2 control-label">Password</label>
        <div class="col-sm-10">
            <input type="password" class="form-control" id="inputPassword3" placeholder="Password">
        </div>
    </div>
    <div class="form-group">
        <div class="col-sm-offset-2 col-sm-10">
            <div class="checkbox">
                <label>
                    <input type="checkbox"> Remember me
                </label>
            </div>
        </div>
    </div>
    <div class="form-group">
        <div class="col-sm-offset-2 col-sm-10">
            <button type="submit" class="btn btn-default">Sign in</button>
        </div>
    </div>
</form>
</body>
</html>

4. 组件

导航条

<style>
    li{
        width: 180px;
    }
</style>


<!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">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>Bootstrap 101 Template</title>
    <!--引入Bootstrap相关的3个文件 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <script src="js/jquery-3.2.1.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
</head>
<body>
<nav class="navbar navbar-inverse">
    <div class="container-fluid">
        <!-- 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="#">首页</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 class="active"><a href="#">Mac <span class="sr-only">(current)</span></a></li>
                <li><a href="#">iPad</a></li>
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">iphone <span class="caret"></span></a>
                    <ul class="dropdown-menu">
                        <li><a href="#">苹果6s</a></li>
                        <li><a href="#">苹果7plus</a></li>
                        <li><a href="#">苹果max</a></li>
                        <li role="separator" class="divider"></li>
                        <li><a href="#">苹果rx</a></li>
                        <li role="separator" class="divider"></li>
                        <li><a href="#">One more separated link</a></li>
                    </ul>
                </li>
            </ul>
            <form class="navbar-form navbar-left" role="search">
                <div class="form-group">
                    <input type="text" class="form-control" placeholder="Search">
                </div>
                <button type="submit" class="btn btn-default">Submit</button>
            </form>
            <ul class="nav navbar-nav navbar-right">
                <li><a href="#">Link</a></li>
                <li class="dropdown">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">更多 <span class="caret"></span></a>
                    <ul class="dropdown-menu">
                        <li><a href="#">Action</a></li>
                        <li><a href="#">Another action</a></li>
                        <li><a href="#">Something else here</a></li>
                        <li role="separator" class="divider"></li>
                        <li><a href="#">Separated link</a></li>
                    </ul>
                </li>
            </ul>
        </div><!-- /.navbar-collapse -->
    </div><!-- /.container-fluid -->
</nav>

</body>
</html>

分页条

<!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">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>Bootstrap 101 Template</title>
    <!--引入Bootstrap相关的3个文件 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <script src="js/jquery-3.2.1.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
</head>
<body>
<nav>
    <ul class="pagination">
        <li>
            <a href="#" aria-label="Previous">
                <span aria-hidden="true">&laquo;</span>
            </a>
        </li>
        <li class="disabled"><a href="#">1</a></li>
        <li><a href="#">2</a></li>
	<-- .active 选中-->
        <li class="active"><a href="#">3</a></li>
        <li><a href="#">4</a></li>
        <li><a href="#">5</a></li>
        <li>
            <a href="#" aria-label="Next">
                <span aria-hidden="true">&raquo;</span>
            </a>
        </li>
    </ul>
</nav>

</body>
</html>

禁用和激活状态

链接在不同情况下可以定制。你可以给不能点击的链接添加 .disabled 类、给当前页添加 .active 类。

插件

轮播图

<!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">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>Bootstrap 101 Template</title>
    <!--引入Bootstrap相关的3个文件 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <script src="js/jquery-3.2.1.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
</head>
<body>

<div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
    <!-- Indicators -->
    <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>
    </ol>

    <!-- Wrapper for slides -->
    <div class="carousel-inner" role="listbox">
        <div class="item active">
            <img src="img/banner_1.jpg" alt="...">
            <div class="carousel-caption">
                图片的内容
            </div>
        </div>
        <div class="item">
            <img src="img/banner_2.jpg" alt="...">
            <div class="carousel-caption">
                ...
            </div>
        </div>
        <div class="item">
            <img src="img/banner_3.jpg" alt="...">
            <div class="carousel-caption">
                ...
            </div>
        </div>
        ...
    </div>

    <!-- Controls -->
    <a class="left carousel-control" href="#carousel-example-generic" 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="#carousel-example-generic" role="button" data-slide="next">
        <span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span>
        <span class="sr-only">Next</span>
    </a>
</div>

</body>
</html>

网站案例

<!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">
    <!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
    <title>Bootstrap 101 Template</title>
    <!-- Bootstrap -->
    <link href="bootstrap/css/bootstrap.min.css" rel="stylesheet">
    <style>
        .paddtop{
            padding-top: 10px;
        }
        .search-input{
            float: left;
            border: 2px solid #00BF67;
            width: 400px;
            height: 35px;
            padding-left: 5px;
            margin-top: 15px;
        }
        .search-btn{
            float: left;
            border: 1px solid #00BF67;
            width: 90px;
            height: 35px;
            background-color: #00BF67;
            text-align: center;
            line-height: 35px;
            margin-top: 15px;
            color: white;
            /*TODO a标签下划线未去掉*/
        }
        a:hover{
            color: white;
        }
        .imgclass{
            width: 50px;
            margin-top: 8px;
        }
        div ul li{
            width: 140px;
        }
        div ul li a{
            font-size: 16px;
        }

        .jx_top{
            border: 2px solid;
            border-bottom-color:#00BF67 ;
            border-left-color:white;
            border-right-color:white ;
            border-top-color:white ;
        }
        .jx_top img{
            padding-bottom: 5px;
        }
        .Copyright{
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                        <p>这里质朴,这里惊艳,这里远离凡尘,这里是藏传佛教的圣地,这里是自驾游的天堂,这里就是甘南。</p>
                        <span style="color: red">¥888</span>
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                        <p>这里质朴,这里惊艳,这里远离凡尘,这里是藏传佛教的圣地,这里是自驾游的天堂,这里就是甘南。</p>
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                        <p>这里质朴,这里惊艳,这里远离凡尘,这里是藏传佛教的圣地,这里是自驾游的天堂,这里就是甘南。</p>
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                        <p>这里质朴,这里惊艳,这里远离凡尘,这里是藏传佛教的圣地,这里是自驾游的天堂,这里就是甘南。</p>
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