06 前端之Bootstrap框架

目录

前端之Bootstrap框架

一、简介

Bootstrap 是最受欢迎的 HTML、CSS 和 JS 框架,用于开发响应式布局、移动设备优先的 WEB 项目。
该框架是很多前端框架的鼻祖 学会它几乎可以熟悉很多框架的原理

二、引入方式

地址:https://v3.bootcss.com/
bootstrap需要依赖于jQuery才能正常执行(动态效果)
PS: 第一次使用该框架的时候最好采用本地导入的方式,让pycharm记住bootstrap的关键字。

本地引入(最完整的)

1.引入jQuery
2.引入bootstrap的css文件
3.引入bootstrap的js文件

将下载完的文件夹拖到pycharm编程项目中即可。(推荐3.4版本非常稳定)
06 前端之Bootstrap框架

CDN引入

1.引入jQuery CDN
2.引入bootstrap css的 CDN
3.引入bootstrap js的 CDN
导入到HTML文件中的<head>即可,如下图

06 前端之Bootstrap框架

三、布局容器

下面进入第一个重要知识点,学会后就可以自己搭建页面了。
首先了解下多数浏览页面的左右两侧都有空白区域————称谓左右留白

container    左右留白
container-fluid   左右不留白

06 前端之Bootstrap框架
实际效果图:
06 前端之Bootstrap框架

四、栅格系统

Bootstrap 提供了一套响应式、移动设备优先的流式栅格系统,随着屏幕或视口(viewport)尺寸的增加,系统会自动分为最多12列,即响应式布局
该系统能够自动监测浏览器窗口大小,从而根据大小来进行变化。
06 前端之Bootstrap框架
参数及使用:

row      行  # 一个row就是一行 一行是固定的12份
col-md-1    占几份
col-sm-1    占几份
col-xs-1    占几份
col-lg-1    占几份

实测:
代码:

点击查看代码
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
    <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>

    <style>
      .c1{
          background-color: red;
          height: 200px;
          border: 5px solid black;
      }
    </style>


</head>
<body>
    <div class="container">
      <div class="row"></div>
        <div class="col-lg-6 c1"></div>
        <div class="col-lg-6 c1"></div>
    </div>
</body>
</html>

实际效果图:
06 前端之Bootstrap框架
这样只是在网页端是分布式布局,但是切换到移动端就变了,所以需要增加代码。

<div class="col-lg-6 c1 col-sm-4"></div>
<div class="col-lg-6 c1 col-sm-8"></div>
我这里将移动端页面改为4、8分成。

06 前端之Bootstrap框架
以下就是栅格系统需要掌握的代码参数
06 前端之Bootstrap框架
PS:对于小白来说,掌握这些就足够了!

五、列偏移

列偏移:就是将任意份数的一行,进行向左或向右移动的操作。

col-md-offset-3 向右移动3份

06 前端之Bootstrap框架

六、表格与表单

6.1表格

编写一个表格,如下折叠代码。

点击查看代码
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
    <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>
</head>
<body>
    <div class="container">
        <div class="row">
            // 向右移动3份,居中
            <div class="col-md-6 col-md-offset-3">
                // 文本直接text-center即可。
                <h2 class="text-center">用户数据表单</h2>
                // 添加表格的样式,用着三个即可。
                <table class="table table-hover table-bordered table-striped">
                    <thead>
                        <tr>
                            <th>ID</th>
                            <th>Name</th>
                            <th>Age</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr>
                            <td>1</td>
                            <td>张三</td>
                            <td>18</td>
                        </tr>
                    </tbody>
                    <tbody>
                        <tr>
                            <td>2</td>
                            <td>李四</td>
                            <td>18</td>
                        </tr>
                    </tbody>
                    <tbody>
                        <tr>
                            <td>3</td>
                            <td>王五</td>
                            <td>18</td>
                        </tr>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</body>
</html>
使用框架调整页面样式一般都是操作标签的class属性。
即table中的class,添加了多种样式。
class = "table"
table-hover  悬浮
table-bordered  增加边框
table-striped  增加背景颜色

实际效果图如下:
06 前端之Bootstrap框架
增加颜色后的body代码如下:

body代码
<body>
    <div class="container">
        <div class="row">
<!--            向右移动3份,居中-->
            <div class="col-md-6 col-md-offset-3">
<!--                文本直接text-center即可。-->
                <h2 class="text-center">用户数据表单</h2>
<!--                添加表格的样式,用着三个即可。-->
                <table class="table table-hover table-bordered table-striped">
                    <thead>
                        <tr class="active">
                            <th>ID</th>
                            <th>Name</th>
                            <th>class="active"</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr class="success">
                            <td>1</td>
                            <td>张三</td>
                            <td>class="success"</td>
                        </tr>
                    </tbody>
                    <tbody>
                        <tr class="info">
                            <td>2</td>
                            <td>李四</td>
                            <td>class="info"</td>
                        </tr>
                    </tbody>
                    <tbody>
                        <tr class="warning">
                            <td>3</td>
                            <td>王五</td>
                            <td>class="warning"</td>
                        </tr>
                    </tbody>
                    <tbody>
                        <tr class="danger">
                            <td>4</td>
                            <td>赵六</td>
                            <td>class="danger"</td>
                        </tr>
                    </tbody>
                </table>
            </div>
        </div>
    </div>
</body>

实际效果图:
06 前端之Bootstrap框架

6.2表单form

在form表单的优化页面中,只需记住下面一行代码即可。

<input type="text" class="form-control"  disabled>
form-control 优化页面
disbaled 禁止其与用户有任何交互

input输入框内阴影提示:

点击查看代码
<form class="form-inline">
  <div class="form-group">
    <label class="sr-only" for="exampleInputEmail3">Email address</label>
    <input type="email" class="form-control" id="exampleInputEmail3" placeholder="Email">
  </div>
  <div class="form-group">
    <label class="sr-only" for="exampleInputPassword3">Password</label>
    <input type="password" class="form-control" id="exampleInputPassword3" placeholder="Password">
  </div>
  <div class="checkbox">
    <label>
      <input type="checkbox"> Remember me
    </label>
  </div>
  <button type="submit" class="btn btn-default">Sign in</button>
</form>

实际效果图如下:
06 前端之Bootstrap框架

七、按钮

为 a、button 或 input 元素添加按钮类(button class)即可使用 Bootstrap 提供的样式。
想让谁变成按钮,就在他标签内添加class = "btn" 即可。

预定义样式

预定义样式代码
<!-- Standard button -->
<button type="button" class="btn btn-default">(默认样式)Default</button>

<!-- Provides extra visual weight and identifies the primary action in a set of buttons -->
<button type="button" class="btn btn-primary">(首选项)Primary</button>

<!-- Indicates a successful or positive action -->
<button type="button" class="btn btn-success">(成功)Success</button>

<!-- Contextual button for informational alert messages -->
<button type="button" class="btn btn-info">(一般信息)Info</button>

<!-- Indicates caution should be taken with this action -->
<button type="button" class="btn btn-warning">(警告)Warning</button>

<!-- Indicates a dangerous or potentially negative action -->
<button type="button" class="btn btn-danger">(危险)Danger</button>

<!-- Deemphasize a button by making it look like a link while maintaining button behavior -->
<button type="button" class="btn btn-link">(链接)Link</button>

实际效果图如下:
06 前端之Bootstrap框架

八、组件

06 前端之Bootstrap框架

如何使用

复制图标下面的代码

不要和其他组件混合使用
图标类不能和其它组件直接联合使用。它们不能在同一个元素上与其他类共同存在。应该创建一个嵌套的 <span> 标签,并将图标类应用到这个 <span> 标签上。

只对内容为空的元素起作用
图标类只能应用在不包含任何文本内容或子元素的元素上。

综上以及学习bootstrap官网内容后,娱乐的代码如下:

点击查看代码
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
    <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>

    <link rel="stylesheet" href="bootstrap-3.4.1-dist/css/bootstrap-theme.min.css">
    <script src="bootstrap-3.4.1-dist/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="font-awesome-4.7.0/css/font-awesome.min.css">
</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="#">Brand</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="#">Link <span class="sr-only">(current)</span></a></li>
        <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">Dropdown <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>
            <li role="separator" class="divider"></li>
            <li><a href="#">One more separated link</a></li>
          </ul>
        </li>
      </ul>
      <form class="navbar-form navbar-left">
        <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">Dropdown <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>
<div class="panel panel-primary">
  <div class="panel-heading">
    <h3 class="panel-title">标题</h3>
  </div>
  <div class="panel-body">
    <div class="jumbotron">
  <h1>Hello, world!</h1>
  <p>...</p>
  <p><a class="btn btn-primary btn-lg" href="#" role="button">Learn more</a></p>
</div>
  </div>
</div>


<!-- Button trigger modal -->
<button type="button" class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal">
  Launch demo modal
</button>

<!-- Modal -->
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
  <div class="modal-dialog" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title" id="myModalLabel">Modal title</h4>
      </div>
      <div class="modal-body">
        ...
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
        <button type="button" class="btn btn-primary">Save changes</button>
      </div>
    </div>
  </div>
</div>












    <div class="container">
        <div class="row">
            <div class="col-md-8 col-md-offset-2">
                <div class="row">
                  <div class="col-xs-6 col-md-3">
                    <a href="#" class="thumbnail">
                      <img src="https://img1.baidu.com/it/u=1875739781,4152007440&fm=253&fmt=auto&app=120&f=JPEG?w=1024&h=576" alt="...">
                    </a>
                  </div>
                  <div class="col-xs-6 col-md-3">
                    <a href="#" class="thumbnail">
                      <img src="https://img1.baidu.com/it/u=1875739781,4152007440&fm=253&fmt=auto&app=120&f=JPEG?w=1024&h=576" alt="...">
                    </a>
                  </div>
                  <div class="col-xs-6 col-md-3">
                    <a href="#" class="thumbnail">
                      <img src="https://img1.baidu.com/it/u=1875739781,4152007440&fm=253&fmt=auto&app=120&f=JPEG?w=1024&h=576" alt="...">
                    </a>
                  </div>
                  <div class="col-xs-6 col-md-3">
                    <a href="#" class="thumbnail">
                      <img src="https://img1.baidu.com/it/u=1875739781,4152007440&fm=253&fmt=auto&app=120&f=JPEG?w=1024&h=576" alt="...">
                    </a>
                  </div>
                </div>

                <div class="progress">
                  <div class="progress-bar progress-bar-striped active" role="progressbar" aria-valuenow="45" aria-valuemin="0" aria-valuemax="100" style="width: 45%">
                    <span class="sr-only">45% Complete</span>
                  </div>
                </div>
            <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="..." alt="...">
      <div class="carousel-caption">
        ...
      </div>
    </div>
    <div class="item">
      <img src="..." 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>
                <div class="row">
                  <div class="col-sm-6 col-md-4">
                    <div class="thumbnail">
                      <img src="https://img0.baidu.com/it/u=3112218522,2073304928&fm=253&fmt=auto&app=120&f=JPEG?w=500&h=1026" alt="...">
                      <div class="caption">
                        <h3>Thumbnail label</h3>
                        <p>...</p>
                        <p><a href="#" class="btn btn-primary" role="button">Button</a> <a href="#" class="btn btn-default" role="button">Button</a></p>
                      </div>
                    </div>
                  </div>
                    <div class="col-sm-6 col-md-4">
                    <div class="thumbnail">
                      <img src="https://img0.baidu.com/it/u=3112218522,2073304928&fm=253&fmt=auto&app=120&f=JPEG?w=500&h=1026" alt="...">
                      <div class="caption">
                        <h3>Thumbnail label</h3>
                        <p>...</p>
                        <p><a href="#" class="btn btn-primary" role="button">Button</a> <a href="#" class="btn btn-default" role="button">Button</a></p>
                      </div>
                    </div>
                  </div>
                    <div class="col-sm-6 col-md-4">
                    <div class="thumbnail">
                      <img src="https://img0.baidu.com/it/u=3112218522,2073304928&fm=253&fmt=auto&app=120&f=JPEG?w=500&h=1026" alt="...">
                      <div class="caption">
                        <h3>Thumbnail label</h3>
                        <p>...</p>
                        <p><a href="#" class="btn btn-primary" role="button">Button</a> <a href="#" class="btn btn-default" role="button">Button</a></p>
                      </div>
                    </div>
                  </div>
                </div>



                <a href="" class="btn btn-primary">点我</a>
                <input type="reset" class="btn btn-info">
                <input type="reset" class="btn btn-info btn-sm">
                <input type="reset" class="btn btn-info btn-lg">
                <input type="reset" class="btn btn-info btn-block">

                
                <h2 class="text-center">用户数据 <span class="glyphicon glyphicon-heart"></span></h2>
                <table class="table table-hover table-striped">
                    <thead>
                        <tr>
                            <th>ID</th>
                            <th>NAME</th>
                            <th>PWD</th>
                        </tr>
                    </thead>
                    <tbody>
                        <tr class="success">
                            <td>1</td>
                            <td>jason</td>
                            <td>123</td>
                        </tr>
                    <tr class="danger">
                            <td>2</td>
                            <td>kevin</td>
                            <td>321</td>
                        </tr>
                    <tr class="warning">
                            <td>3</td>
                            <td>tony</td>
                            <td>222</td>
                        </tr>
                    </tbody>
                    <tbody></tbody>
                </table>
                <h2 class="text-center">用户注册 <i class="fa fa-bath" aria-hidden="true" style="color: red"></i></h2>
                <form action="">
                    <p>username:
                        <input type="text" class="form-control" value="jason" disabled>
                    </p>
                    <p>password:
                        <input type="text" class="form-control">
                    </p>
                    <p>
                        <input type="radio">男
                        <input type="radio">女
                        <input type="radio">其他
                    </p>
                    <p>
                        <select name="" id="" class="form-control">
                            <option value="">111</option>
                            <option value="">222</option>
                            <option value="">333</option>
                        </select>

                    </p>
                    <input type="submit"  class="btn btn-danger btn-block">
                </form>

                <i class="fa fa-spinner fa-spin fa-3x fa-fw"></i>
                <span class="sr-only">Loading...</span>

                <i class="fa fa-circle-o-notch fa-spin fa-3x fa-fw"></i>
                <span class="sr-only">Loading...</span>

                <i class="fa fa-refresh fa-spin fa-3x fa-fw"></i>
                <span class="sr-only">Loading...</span>

                <i class="fa fa-cog fa-spin fa-3x fa-fw"></i>
                <span class="sr-only">Loading...</span>

                <i class="fa fa-spinner fa-pulse fa-3x fa-fw"></i>
                <span class="sr-only">Loading...</span>

                <img src="..." alt="..." class="img-rounded">
                <img src="..." alt="..." class="img-circle">
                <img src="..." alt="..." class="img-thumbnail">
            </div>
            
        </div>
    </div>

</body>
</html>
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