Bootstrap框架

简介

　　Bootstrap 是一种简洁、直观、强悍的前端开发框架，它让web开发更迅速、简单

　　官方地址：https://getbootstrap.com

　　中文地址：http://www.bootcss.com/

环境搭建

　　我们使用V3版本，用于生产环境的Bootstrap，将下载的安装包解压，查看目录结构如下

　　由于Bootstrap的某些组件依赖于jQuery，所以请确保下载对应版本的jQuery文件，来保证Bootstrap相关组件运行正常

Bootstrap全局样式

标题相关

<!--标题-->
<h1>一级标题36px</h1>
<h2>二级标题30px</h2>
<h3>三级标题24px</h3>
<h4>四级标题18px</h4>
<h5>五级标题14px</h5>
<h6>六级标题12px</h6>
<!--除了使用h标签，Bootstrap内置了相应的全局样式-->
<!--内联标签应用标题样式-->
<span class="h1">一级标题36px</span>
<span class="h2">二级标题30px</span>
<span class="h3">三级标题24px</span>
<span class="h4">四级标题18px</span>
<span class="h5">五级标题14px</span>
<span class="h6">六级标题12px</span>

<!--副标题-->
<!--一级标题中嵌入小标题-->
<h1>一级标题<small>小标题</small></h1>

文本相关

<!--文本对齐-->
<p class="text-left">文本左对齐</p>
<p class="text-center">文本居中</p>
<p class="text-right">文本右对齐</p>

<!--大小写-->
<p class="text-lowercase">Lowercased text.</p>
<p class="text-uppercase">Uppercased text.</p>
<p class="text-capitalize">Capitalized text.</p>

表格

Class               描述
.table-striped      条纹状表格
.table-bordered     带边框的表格
.table-hover        鼠标悬停变色的表格
.table-condensed    紧缩型表格
.table-responsive   响应式表格

状态类

Class       描述
.active     鼠标悬停在行或单元格上时所设置的颜色
.success    标识成功或积极的动作
.info       标识普通的提示信息或动作
.warning    标识警告或需要用户注意
.danger     标识危险或潜在的带来负面影响的动作

按钮

<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">

<!--按钮样式-->
<!-- 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>

<!--按钮大小-->
<p>
  <button type="button" class="btn btn-primary btn-lg">（大按钮）Large button</button>
  <button type="button" class="btn btn-default btn-lg">（大按钮）Large button</button>
</p>
<p>
  <button type="button" class="btn btn-primary">（默认尺寸）Default button</button>
  <button type="button" class="btn btn-default">（默认尺寸）Default button</button>
</p>
<p>
  <button type="button" class="btn btn-primary btn-sm">（小按钮）Small button</button>
  <button type="button" class="btn btn-default btn-sm">（小按钮）Small button</button>
</p>
<p>
  <button type="button" class="btn btn-primary btn-xs">（超小尺寸）Extra small button</button>
  <button type="button" class="btn btn-default btn-xs">（超小尺寸）Extra small button</button>
</p>

图片

<!--图片形状-->
<img src="..." alt="..." class="img-rounded">
<img src="..." alt="..." class="img-circle">
<img src="..." alt="..." class="img-thumbnail">

辅助类

<!--文本颜色-->
<p class="text-muted">...</p>
<p class="text-primary">...</p>
<p class="text-success">...</p>
<p class="text-info">...</p>
<p class="text-warning">...</p>
<p class="text-danger">...</p>
<!--背景颜色-->
<p class="bg-primary">...</p>
<p class="bg-success">...</p>
<p class="bg-info">...</p>
<p class="bg-warning">...</p>
<p class="bg-danger">...</p>
<!--关闭按钮-->
<button type="button" class="close" aria-label="Close"><span aria-hidden="true">&times;</span></button>
<!--下拉三角-->
<span class="caret"></span>
<!--快速浮动-->
<div class="pull-left">...</div>
<div class="pull-right">...</div>
<!--内容块居中-->
<div class="center-block">...</div>
<!--清除浮动-->
<div class="clearfix">...</div>
<!--显示与隐藏-->
<div class="show">...</div>
<div class="hidden">...</div>

常用Bootstrap组件

　　字体图标、下拉菜单、按钮组、输入框组、导航、分页、标签和徽章、页头、缩率图、进度条

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="./bootstrap.min.css">
    <title>登录注册</title>
    <style>
        body{
            background-color: #eee;
        }
    </style>

</head>
<body>
<div class="container">
    <div class="row">
        <div class="col-md-4 col-md-offset-4" style="margin-top:100px">
            <h1 class="text-center">请登录</h1>
            <form class="form-horizontal">
                <div class="form-group">
                    <label for="inputEmail3" class="col-sm-2 control-label">邮箱</label>
                    <div class="col-sm-8">
                        <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">密码</label>
                    <div class="col-sm-8">
                        <input type="password" class="form-control" id="inputPassword3" placeholder="Password">
                    </div>
                </div>
                <div class="form-group">
                    <div class="col-sm-offset-2 col-sm-8">
                        <div class="checkbox">
                            <label>
                                <input type="checkbox"> 记住我
                            </label>
                        </div>
                    </div>
                </div>
                <div class="form-group">
                    <div class="col-sm-offset-2 col-sm-8">
                        <button type="submit" class="btn btn-primary btn-block">登录</button>
                    </div>
                </div>
            </form>
        </div>
    </div>
</div>
</body>
</html>