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Bootstrap入门(一)

婉殇成长笔记 2022-04-27 阅读 53
bootstrap

前言

大家好!我是九歌,今天我要分享的内容是Bootstrap的入门,首先老规矩先上思维导图。


 

提示:以下是本篇文章正文内容,下面案例可供参考

一、Bootstrap

        学习一门新的技术我们终究都逃不过三个W。What,Why,Where。

        1.What——Bootstrap是什么?

        Bootstrap包含 

        2.Why——为什么要学习Bootstrap 

        3.where——Bootstrap都用在哪些方面呢? 

二、使用步骤

1.下载Bootstrap

网址:https://v4.bootcss.com/

下载应该都会吧,下新版的就行,不会可以看文档,简单易上手。

2.引入库

代码如下:

<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<style>
			.aa{
				color: white;
				background-color: #007BFF;
				border: 0px;
				width: 50px;
				height: 30px;
				border-radius: 3px;
			}
		</style>
		<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
	</head>
	<body>
		
		<div class="container">
		<button class="aa">查询</button>
		<hr color="red" />
		<button class="btn btn-outline-primary">搜索</button>
		</div>
		
		<script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<script src="js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
		
	</body>
</html>

三、 案例

        1.查询原生态实现对比Bootstrap方式实现

原生态代码如下:

<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<!-- <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" /> -->
		<style>
			.aa{
				color: white;
				background-color: #007BFF;
				border: 0px;
				width: 50px;
				height: 30px;
				border-radius: 3px;
			}
		</style>
		<!-- <link rel="stylesheet" type="text/css" href="css/bootstrap.css"/> -->
	</head>
	<body>
		
		<div class="container">
		<button class="aa">查询</button>
		<hr color="red" />
		<button class="btn btn-outline-primary">搜索</button>
		</div>
		
		<!-- <script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<script src="js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
		 -->
	</body>
</html>

原生态效果如下:

Bootstrap方式代码如下: 

<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<!-- <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" /> -->
		<style>
			.aa{
				color: white;
				background-color: #007BFF;
				border: 0px;
				width: 50px;
				height: 30px;
				border-radius: 3px;
			}
		</style>
		<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/> 
	</head>
	<body>
		
		<div class="container">
		<button class="aa">查询</button>
		<hr color="red" />
		<button class="btn btn-outline-primary">搜索</button>
		</div>
		
		<script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<script src="js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
	</body>
</html>

        2. Bootstrap页面在手机浏览器中的展示效果

 

<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<style>
			.aa{
				color: white;
				background-color: #007BFF;
				border: 0px;
				width: 50px;
				height: 30px;
				border-radius: 3px;
			}
		</style><link rel="stylesheet" type="text/css" href="css/bootstrap.css"/> 
	</head>
	<body>
		
		<div class="container">
		<button class="aa">查询</button>
		<hr color="red" />
		<button class="btn btn-outline-primary">搜索</button>
		</div>
		
		<script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<script src="js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
	</body>
</html>

        3. 首页导航&搜索区域原生态实现

                代码如下:

<html>
	<head>
		<meta charset="utf-8">
		<title>案例3</title>
		<style type="text/css">
			.aa{
				height: 50px;
				background-color: #F8F9FA;
				line-height: 50px;
			}
			.bb{
				float: left;
				margin-left: 50px;
			}
			.cc{
				float: right;
				margin-right: 50px;
			}
			.cc a{
				margin-left: 10px;
			}
			.ss{
				background-color: #dcdcdc;
				height: 100px;
				margin: 20px 50px 0px 50px;
				text-align: center;
				line-height: 100px;
			}
			.ss button{
				color: white;
				background-color: #007BFF;
				border: 0px;
				width: 50px;
				height: 30px;
				border-radius: 3px;
			}
			.ss input{
				border: 0px;
				width: 200px;
				height: 25px;
			}
		</style>
	</head>
	<body>
		<div class="aa">
			<div class="bb">
				您好,欢迎来到霍格沃兹网上书店!
			</div>
			<div class="cc">
				<a>首页</a>
				<a>登录</a>
				<a>注册</a>
				<a>我的购物车</a>
			</div>
		</div>
		<div class="ss">
			<input type="text"/>
			<button>查询</button>
		</div>
	</body>
</html>

效果如下:

 

        4. 首页导航&搜索区域Bootstrap实现搭建书城首页框架

        代码如下:

<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
		<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
		<style>
					.navbar-collapse{
						flex-grow: 0;/* 1、代表制动会占用父容器剩余空间 0代表不占用 */
					}
					.ss{
						height: 100px;
						background-color: #dcdcdc;
						margin-top: 20px;
						
					}
					.form-group{
						width: 300px;
						margin-left: auto;
						margin-right: auto;
						margin-top: 31px;
					}
				</style>
	</head>
	<body>
		<nav class="navbar navbar-expand-lg navbar-light bg-light">
					<div class="container">
						<a class="navbar-brand" href="#">您好,欢迎来到霍格沃兹网上书店!</a>
						<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup"
						 aria-expanded="false" aria-label="Toggle navigation">
							<span class="navbar-toggler-icon"></span>
						</button>
						<div class="collapse navbar-collapse" id="navbarNavAltMarkup">
							<div class="navbar-nav">
								<a class="nav-item nav-link active" href="#">首页 <span class="sr-only">(current)</span></a>
								<a class="nav-item nav-link" href="#">登陆</a>
								<a class="nav-item nav-link" href="#">注册</a>
								<a class="nav-item nav-link " href="#">我的购物车</a>
							</div>
						</div>
					</div>
				</nav>
		
				<!-- 栅格系统来实现首页的部分框架 -->
				<div class="container">
					<!-- 第一行 -->
					<div class="row ss">
						<div class="col">
							<form>
								<div class="form-group">
									<div class="input-group mb-3">
										<input type="text" class="form-control" placeholder="书籍关键字" aria-label="Recipient's username"
										 aria-describedby="basic-addon2">
										<div class="input-group-append">
											<button class="btn btn-primary" type="button">查询</button>
										</div>
									</div>
								</div>
							</form>
						</div>
					</div>
		
					<div class="row">
						<!-- 第二行 -->
						<div class="col-3" style="background-color: pink;">
							左3-书籍分类
						</div>
		
						<div class="col-9" style="background-color: skyblue; ">
							<!-- 右9-轮播图&新书上架&热门书籍 -->
							<div class="row">
								<div class="col">
									右9-第一行轮播图
								</div>
							</div>
							<div class="row">
								<!-- 右9中新书上架 -->
								<div class="col">
									①新书上架
								</div>
								<div class="col">
									②新书上架
								</div>
								<div class="col">
									③新书上架
								</div>
								<div class="col">
									④新书上架
								</div>
								<div class="col">
									⑤新书上架
								</div>
							</div>
		
							<div class="row">
								<!-- 右9中热门书籍 -->
								<div class="col">
									①热门书籍
								</div>
								<div class="col">
									②热门书籍
								</div>
								<div class="col">
									③热门书籍
								</div>
								<div class="col">
									④热门书籍
								</div>
								<div class="col">
									⑤热门书籍
								</div>
							</div>
						</div>
					</div>
				</div>

		
		<script src="js/jquery-3.3.1.js" type="text/javascript" charset="utf-8"></script>
		<script src="js/bootstrap.js" type="text/javascript" charset="utf-8"></script>
	</body>
</html>

效果如下:


总结


以上就是今天要讲的内容,本文仅仅简单介绍了bootstrap的使用,如有错误还望指正。谢谢您嘞。

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