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
bootstrap文件的目录结构
bootstrap/
├── css/
│ ├── bootstrap.css
│ ├── bootstrap.css.map
│ ├── bootstrap.min.css
│ ├── bootstrap.min.css.map
│ ├── bootstrap-theme.css
│ ├── bootstrap-theme.css.map
│ ├── bootstrap-theme.min.css
│ └── bootstrap-theme.min.css.map
├── js/
│ ├── bootstrap.js
│ └── bootstrap.min.js
└── fonts/
├── glyphicons-halflings-regular.eot
├── glyphicons-halflings-regular.svg
├── glyphicons-halflings-regular.ttf
├── glyphicons-halflings-regular.woff
└── glyphicons-halflings-regular.woff2
在网页 中配置Bootstrap
<!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="https://bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<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="#">Project name</a>
</div>
<div id="navbar" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home</a></li>
<li><a href="#about">About</a></li>
<li><a href="#contact">Contact</a></li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
<!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery，所以必须放在前边) -->
<script src="https://cdn.bootcss.com/jquery/1.12.4/jquery.min.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="bootstrap/3.3.7/js/bootstrap.min.js"></script>
</body>
</html>
<meta name="viewport" content="width=device-width, initial-scale=1">
viewport:视口
width:可视区域的宽度，值可为数字或关键词device-width
intial-scale:页面首次被显示是可视区域的缩放级别，取值1.0则页面按实际尺寸显示，无任何缩放
maximum-scale=1.0, minimum-scale=1.0;可视区域的缩放级别
maximum-scale用户可将页面放大的程序，1.0将禁止用户放大到实际尺寸之上
user-scalable:是否可对页面进行缩放，no 禁止缩放
组件的使用
图标
一般使用行内标签<i>或者<span>加载图标
在标签设置class ,将图标名设置为class值即可
可以改变图片的颜色和大小
<i class="glyphicon glyphicon-music" style="color:green;font-size:20px ;"></i>
按钮
可作为按钮使用的标签或元素为 <a>、<button> 或 <input> 元素
btn.png
<!-- Standard button -->
<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>
<!-- 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>
改变按钮的尺寸
.btn-lg(大)、.btn-sm(中) 或 .btn-xs(小)
size.png
设置<a>,<input>， 但是建议使用<button>兼容更好
<a href="#" class="btn btn-primary btn-lg >Primary link</a>
<a href="#" class="btn btn-default btn-lg " role="button">Link</a>
<input type="button" class="btn btn-default" value="按钮"/>
在按钮中使用图标
<button type="button" class="btn btn-default">
<i class="glyphicon glyphicon-play-circle"></i> 播放</button>
按钮组
通过按钮组容器把一组按钮放在同一行里
<div class="btn-group" role="group" aria-label="...">
<button type="button" class="btn btn-default">Left</button>
<button type="button" class="btn btn-default">Middle</button>
<button type="button" class="btn btn-default">Right</button>
</div>
按钮工具栏
把一组 <div class="btn-group"> 组合进一个 <div class="btn-toolbar"> 中就可以做成更复杂的组件
<div class="btn-toolbar" role="toolbar" >
<div class="btn-group" role="group" >
<button type="button" class="btn btn-default">Left</button>
<button type="button" class="btn btn-default">Middle</button>
<button type="button" class="btn btn-default">Right</button>
</div>
<div class="btn-group" role="group" >
<button type="button" class="btn btn-default">Left</button>
<button type="button" class="btn btn-default">Middle</button>
<button type="button" class="btn btn-default">Middle</button>
<button type="button" class="btn btn-default">Right</button>
</div>
</div>
下拉菜单：将下拉菜单触发器和下拉菜单都包裹在 .dropdown 里
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button"
id="dropdownMenu1" data-toggle="dropdown"
aria-haspopup="true" aria-expanded="true">
Dropdown
<span class="caret"></span>
</button>
<ul class="dropdown-menu" aria-labelledby="dropdownMenu1">
<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>
</div>
输入框组
通过在文本输入框 <input> 前面、后面或是两边加上文字或按钮，可以实现对表单控件的扩展。
默认宽度与父标签或浏览器相同，可以重新设置
<div class="input-group" style="width: 300px;">
<span class="input-group-addon" id="basic-addon1">@</span>
<input type="text" class="form-control" placeholder="Username" >
</div>
<div class="input-group">
<input type="text" class="form-control" placeholder="Recipient's username" >
<span class="input-group-addon" id="basic-addon2">@example.com</span>
</div>
也可以嵌入图标
<div class="input-group" style="width: 300px;">
<span class="input-group-addon" id="basic-addon1">用户名</span>
<input type="text" class="form-control" placeholder="Username" >
<span class="input-group-addon"><i class="glyphicon glyphicon-user"></i></span>
</div>
轮播图
<div class="container">
<!--轮播图-->
<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/16.jpg" alt="...">
</div>
<div class="item">
<img src="img/91114e.png" alt="...">
</div>
<div class="item">
<img src="img/16.jpg" width="900px" alt="...">
</div>
</div>
<!-- Controls -->
<a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
<span class="glyphicon glyphicon-chevron-left"></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"></span>
<span class="sr-only">Next</span>
</a>
</div>
导航：Bootstrap 中的导航组件都依赖同一个 .nav 类
<ul class="nav nav-tabs">
<li role="presentation" class="active"><a href="#">Home</a></li>
<li role="presentation"><a href="#">Profile</a></li>
<li role="presentation"><a href="#">Messages</a></li>
</ul>
<ul class="nav nav-pills">
<li role="presentation" class="active"><a href="#">Home</a></li>
<li role="presentation"><a href="#">Profile</a></li>
<li role="presentation"><a href="#">Messages</a></li>
</ul>
导航嵌入下拉菜单
<ul class="nav nav-pills">
<li role="presentation" class="active"><a href="#">Home</a></li>
<li role="presentation"><a href="#">Profile</a></li>
<li role="presentation" class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#" 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>
