Bootstrap的基础学习

Bootstrap的基础学习

文章目录

概念:

  • 一个前端开发的框架,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,再进行开发,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的到丰富的页面效果
      2. 相应式布局
        • 同一套页面可以兼容不同的分辨率的设备

快速入门:

  1. 下载Bootstrap
  2. 在项目中将这三个文件夹复制
  3. 创建html页面,引入必要的资源文件
<!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!说明宽度是设备宽度,缩放比例是一比一!! -->
  <title>Bootstrap 101 Template</title>

  <!-- Bootstrap -->
  <link rel="stylesheet" href="../css/bootstrap.min.css" integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">

  <!-- HTML5 shim 和 Respond.js 是为了让 IE8 支持 HTML5 元素和媒体查询(media queries)功能 -->
  <!-- 警告:通过 file:// 协议(就是直接将 html 页面拖拽到浏览器中)访问页面时 Respond.js 不起作用 -->
  <!--[if lt IE 9]>
  <![endif]-->
</head>
<body>
<h1>你好,世界!</h1>

<!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery,所以必须放在前边) -->
<script src="../js/jquery.min.js" integrity="sha384-nvAa0+6Qg9clwYCGGPpDQLVpLNn0fRaROjHqs13t4Ggj3Ez50XnGQqc/r8MhnRDZ" crossorigin="anonymous"></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="../js/bootstrap.min.js" integrity="sha384-aJ21OjlMXNL5UyIl/XNwTMqvzeRMZH2w8c5cRVpzpU8Y5bApTppSuUkhZXN0VxHd" crossorigin="anonymous"></script>
</body>
</html>

响应式布局

  • 同一套页面可以兼容不同的分辨率的设备
  • 实现:依赖于栅格系统:将一行平均分为12个格子,可以去指定元素占几个格子
  • 步骤:
    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
    2. 定义行,相当于之前的tr
    3. 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)
      • 注意:
        1. 一行中格子超过12,则超出部分自动换行
        2. 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
        3. 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,会一个元素占满整行

CSS样式和JS插件

  • 参考地址

  • 全局CSS样式:

    • 按钮:class=“btn btn-default”

    • 图片:

      • class=“img-responsive”:图片在任何情况下都占100%

      • 图片的形状:

        • <img src="../img/lvugkl.jpg" class="img-responsive img-rounded" alt="Responsive image">//方形
          <img src="../img/lvugkl.jpg" class="img-responsive img-circle" alt="Responsive image">//圆形
          <img src="../img/lvugkl.jpg" class="img-responsive img-thumbnail" alt="Responsive image">//线框
          
    • 表格:

      • table
      • table-bordered:加边框
      • table-hover:悬浮
    • 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!说明宽度是设备宽度,缩放比例是一比一!! -->
          <title>Bootstrap 101 Template</title>
        
          <!-- Bootstrap -->
          <link rel="stylesheet" href="css/bootstrap.min.css" crossorigin="anonymous">
        <!--    integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" -->
        
          <!-- HTML5 shim 和 Respond.js 是为了让 IE8 支持 HTML5 元素和媒体查询(media queries)功能 -->
          <!-- 警告:通过 file:// 协议(就是直接将 html 页面拖拽到浏览器中)访问页面时 Respond.js 不起作用 -->
          <!--[if lt IE 9]>
          <![endif]-->
            <style>
                .inner{
                    border: 1px solid red;
                }
            </style>
        </head>
        <body>
            <a class="btn btn-default" href="#" role="button">Link</a>
            <button type="submit">Button</button>
            <input type="button" value="Input">
            <input type="submit" value="Submit">
            <br>
            <!-- 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>
            <hr>
            <img src="../img/lvugkl.jpg" class="img-responsive" alt="Responsive image">
            <img src="../img/lvugkl.jpg" class="img-responsive img-rounded" alt="Responsive image">
            <img src="../img/lvugkl.jpg" class="img-responsive img-circle" alt="Responsive image">
            <img src="../img/lvugkl.jpg" class="img-responsive img-thumbnail" alt="Responsive image">
            <hr><hr>
            <form>
                <div class="form-group">
                    <label for="exampleInputEmail1">Email address</label>
                    <input type="email" class="form-control" id="exampleInputEmail1" placeholder="Email">
                </div>
                <div class="form-group">
                    <label for="exampleInputPassword1">Password</label>
                    <input type="password" class="form-control" id="exampleInputPassword1" placeholder="Password">
                </div>
                <div class="form-group">
                    <label for="exampleInputFile">File input</label>
                    <input type="file" id="exampleInputFile">
                    <p class="help-block">Example block-level help text here.</p>
                </div>
                <div class="checkbox">
                    <label>
                        <input type="checkbox"> Check me out
                    </label>
                </div>
                <button type="submit" class="btn btn-default">Submit</button>
            </form>
        </body>
        </html>
        
  • 组件

    • 导航条

      • <!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!说明宽度是设备宽度,缩放比例是一比一!! -->
          <title>Bootstrap 101 Template</title>
        
          <!-- Bootstrap -->
          <link rel="stylesheet" href="css/bootstrap.min.css" crossorigin="anonymous">
        <!--    integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" -->
        
          <!-- HTML5 shim 和 Respond.js 是为了让 IE8 支持 HTML5 元素和媒体查询(media queries)功能 -->
          <!-- 警告:通过 file:// 协议(就是直接将 html 页面拖拽到浏览器中)访问页面时 Respond.js 不起作用 -->
          <!--[if lt IE 9]>
          <![endif]-->
            <style>
                .inner{
                    border: 1px solid red;
                }
            </style>
        </head>
        <body>
        <!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery,所以必须放在前边) -->
        <script src="js/jquery-3.6.0.min.js"></script>
        <!--jquery的js引用要放在Bootstrap的js的引用前下拉菜单才生效-->
        <!-- 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="js/bootstrap.min.js" ></script>
        
        <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>
        </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!说明宽度是设备宽度,缩放比例是一比一!! -->
          <title>Bootstrap 101 Template</title>
        
          <!-- Bootstrap -->
          <link rel="stylesheet" href="css/bootstrap.min.css" crossorigin="anonymous">
        <!--    integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" -->
        
          <!-- HTML5 shim 和 Respond.js 是为了让 IE8 支持 HTML5 元素和媒体查询(media queries)功能 -->
          <!-- 警告:通过 file:// 协议(就是直接将 html 页面拖拽到浏览器中)访问页面时 Respond.js 不起作用 -->
          <!--[if lt IE 9]>
          <![endif]-->
            <style>
                .inner{
                    border: 1px solid red;
                }
            </style>
        </head>
        <body>
        <nav aria-label="Page navigation">
            <ul class="pagination">
                <li class="disabled">
                    <a href="#" aria-label="Previous">
                        <span aria-hidden="true">&laquo;</span>
                    </a>
                </li>
                <li class="active"><a href="#">1</a></li>
                <li><a href="#">2</a></li>
                <li><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>
        
  • 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!说明宽度是设备宽度,缩放比例是一比一!! -->
        <title>Bootstrap 101 Template</title>
      
        <!-- Bootstrap -->
        <link rel="stylesheet" href="css/bootstrap.min.css" crossorigin="anonymous">
      <!--    integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" -->
      
        <!-- HTML5 shim 和 Respond.js 是为了让 IE8 支持 HTML5 元素和媒体查询(media queries)功能 -->
        <!-- 警告:通过 file:// 协议(就是直接将 html 页面拖拽到浏览器中)访问页面时 Respond.js 不起作用 -->
        <!--[if lt IE 9]>
        <![endif]-->
          <style>
              img{
                  width: 100%;
                  height: 100px;
              }
              .inner{
                  border: 1px solid red;
              }
          </style>
          <script src="js/jquery-3.6.0.min.js"></script>
          <script src="js/bootstrap.min.js"></script>
          <!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery,所以必须放在前边) -->
          <script src="js/jquery.min.js" integrity="sha384-nvAa0+6Qg9clwYCGGPpDQLVpLNn0fRaROjHqs13t4Ggj3Ez50XnGQqc/r8MhnRDZ" crossorigin="anonymous"></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="js/bootstrap.min.js" integrity="sha384-aJ21OjlMXNL5UyIl/XNwTMqvzeRMZH2w8c5cRVpzpU8Y5bApTppSuUkhZXN0VxHd" crossorigin="anonymous"></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/yh2.jpg" alt="..." width="100%">
                  <div class="carousel-caption">
                  </div>
              </div>
              <div class="item">
                  <img src="../img/yh1.jpg" alt="...">
                  <div class="carousel-caption">
      
                  </div>
              </div>
              <div class="item">
                  <img src="../img/yh3.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>
      
  • 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!说明宽度是设备宽度,缩放比例是一比一!! -->
  <title>Bootstrap 101 Template</title>

  <!-- Bootstrap -->
  <link rel="stylesheet" href="css/bootstrap.min.css" crossorigin="anonymous">
<!--    integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" -->

  <!-- HTML5 shim 和 Respond.js 是为了让 IE8 支持 HTML5 元素和媒体查询(media queries)功能 -->
  <!-- 警告:通过 file:// 协议(就是直接将 html 页面拖拽到浏览器中)访问页面时 Respond.js 不起作用 -->
  <!--[if lt IE 9]>
  <![endif]-->
    <style>
        .inner{
            border: 1px solid red;
        }
    </style>
    <script src="js/jquery-3.6.0.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
    <!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery,所以必须放在前边) -->
    <script src="js/jquery.min.js" integrity="sha384-nvAa0+6Qg9clwYCGGPpDQLVpLNn0fRaROjHqs13t4Ggj3Ez50XnGQqc/r8MhnRDZ" crossorigin="anonymous"></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="js/bootstrap.min.js" integrity="sha384-aJ21OjlMXNL5UyIl/XNwTMqvzeRMZH2w8c5cRVpzpU8Y5bApTppSuUkhZXN0VxHd" crossorigin="anonymous"></script>

    <style>
       /*内 边 距*/
      .paddtop1{
        padding-top: 10px;
      }
      .search-btn{
        float: left;
        border: 1px solid #ffc900;
        width: 90px;
        height: 35px;
        background-color: #ffc900;
        text-align: center;
        line-height: 35px;/*输入高是多少px就可以数值居中*/
        margin-top: 15px;
      }
      .search-input{
        float: left;
        border: 2px solid #ffc900;
        width: 400px;
        height: 35px;
        padding-left: 5px;
        margin-top: 15px;
      }
      .jx{
        border-bottom: 2px solid #ffc900;
        padding: 5px;
      }
      .company{
        height: 40px;
        background-color: #ffc900;
        text-align: center;
        line-height: 40px;
        font-size: 8px;
      }
    </style>
</head>
<body>
<!--页眉部分-->
<header class="container-fluid">
  <div class="row">
    <img src="../img/top_banner.jpg" class="img-responsive">
  </div>
  <div class="row paddtop1">
    <div class="col-sm-4">
      <img src="../img/logo.jpg" class="img-responsive">
    </div>
    <div class="col-sm-5">
      <input placeholder="请输入路线名称" class="search-input">
      <a class="search-btn" href="https://www.baidu.com">搜索</a>
    </div>
    <div class="col-sm-3">
      <img src="../img/hotel_tel.png" class="img-responsive">
    </div>
  </div>
<!--  导航栏-->
  <div class="row">

    <nav class="navbar navbar-default">
      <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><a href="#">Link</a></li>
            <li><a href="#">Link</a></li>
            <li><a href="#">Link</a></li>
            <li><a href="#">Link</a></li>
          </ul>
        </div><!-- /.navbar-collapse -->
      </div><!-- /.container-fluid -->
    </nav>
  </div>
<!--  轮播图-->
  <div class="row">

    <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>
        <li data-target="#carousel-example-generic" data-slide-to="3"></li>
      </ol>

      <!-- Wrapper for slides -->
      <div class="carousel-inner" role="listbox">
        <div class="item active">
          <img src="../img/banner_1.jpg" alt="..." width="100%">
          <div class="carousel-caption">
          </div>
        </div>
        <div class="item">
          <img src="../img/banner_2.jpg" alt="...">
          <div class="carousel-caption">

          </div>
        </div>
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