BootStrap
1.概述：
代码语言：javascript复制* 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，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。2. 快速入门
代码语言：javascript复制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！ -->
<title>HelloWorld</title>
<!-- Bootstrap -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="js/jquery-3.2.1.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="js/bootstrap.min.js"></script>
</head>
<body>
<h1>你好，世界！</h1>
</body>
</html>3. 响应式布局：
1. 栅格系统入门：
代码语言：javascript复制* 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
* 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：占满屏幕，宽度100%
2.定义行：相当于之前的tr 样式row
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):clo-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>栅格系统-入门</title>
<!-- Bootstrap -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="js/jquery-3.2.1.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="js/bootstrap.min.js"></script>
<style>
.inner{
border: 1px solid red;
}
</style>
</head>
<body>
<!-- 1.定义容器：-->
<div class="container-fluid">
<!-- 2.定义行-->
<div class="row">
<!-- 3.定义元素-->
<!-- 在大显示器一行12个格子-->
<!-- 在pad上一行6个格子-->
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
<div class="col-lg-1 col-sm-2 inner" >栅格</div>
</div>
</div>
</body>
</html>2. 栅格系统注意事项：
1.一行中如果格子数目超过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.如果真是设备宽度小于了设置栅格类属性的设备代码的最小值，会一个元素沾满一整行。
4. CSS样式和JS插件：
1. 全局CSS样式：
- 按钮：class=”btn btn-default”
- 图片：
class="img-responsive"：图片在任意尺寸都占100%
<!--hexoPostRenderEscape:<figure class="highlight plain"><table><tr><td class="code"><pre><span class="line"></span><br><span class="line">* 图片形状：</span><br><span class="line"></span><br><span class="line"> ```html</span><br><span class="line"> <img src="..." alt="..." class="img-rounded">：方形</span><br><span class="line"> <img src="..." alt="..." class="img-circle">：圆形</span><br><span class="line"> <img src="..." alt="..." class="img-thumbnail">：相框</span><br></pre></td></tr></table></figure>:hexoPostRenderEscape-->- 代码示例：
<!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>HelloWorld</title>
<!-- Bootstrap -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="js/jquery-3.2.1.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<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">
<!-- 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/banner_1.jpg" class="img-responsive ">
<img src="img/banner_1.jpg" class="img-responsive img-rounded">
<img src="img/banner_1.jpg" class="img-responsive img-circle">
<img src="img/banner_1.jpg" class="img-responsive img-thumbnail">
</body>
</html>- 表格：
- table：单纯的表格
- table-bordered：带边框的表格
- table-hover：鼠标悬停
- 表单：
- 给表单项添加：class=”form-control”
- 示例：
<!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>HelloWorld</title>
<!-- Bootstrap -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="js/jquery-3.2.1.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="js/bootstrap.min.js"></script>
</head>
<body>
<table class="table table-bordered">
<tr>
<th>编号</th>
<th>姓名</th>
<th>性别</th>
</tr>
<tr>
<td>1</td>
<td>张三</td>
<td>男</td>
</tr>
<tr>
<td>2</td>
<td>李四</td>
<td>男</td>
</tr>
<tr>
<td>3</td>
<td>王五</td>
<td>男</td>
</tr>
</table>
<hr><hr><hr>
<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>2. 组件：
- 导航条
- 分页条
- 具体代码看文档
3. 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>HelloWorld</title>
<!-- Bootstrap -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="js/jquery-3.2.1.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<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>
<div class="item">
<img src="img/banner_2.jpg" alt="...">
</div>
<div class="item">
<img src="img/banner_3.jpg" alt="...">
</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>示例访问Bootstrap中文网
https://v3.bootcss.com/
文章作者: silentcow
文章链接: http://silentcow.cn/2020/08/06/BootStrap/
