BootStrap

Bootstrap

概念

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

  1. 框架:一个半成品软件,开发人员可以在框架基础上,在进行开发,简化编码
  2. 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

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

  4. 示例:

    
    	<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">
    	    
    	    <title>Bootstrap HelloWorldtitle>
    	
    	    
    	    <link href="css/bootstrap.min.css" rel="stylesheet">
            
    	    <script src="js/jquery-3.2.1.min.js">script>
    	    
    	    <script src="js/bootstrap.min.js">script>
    	head>
    	<body>
    	<h1>你好,世界!h1>
    	body>
    	html>
    

响应式布局

  1. 同一套页面可以兼容不同分辨率的设备
  2. 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
  3. 步骤
    1. 定义容器。相当于之前的table
      1. 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 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
      1. 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)
    4. 注意
      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,会一个元素沾满一整行

CSS样式和JS插件

  1. 全局CSS样式
    1. 按钮:class=“btn btn-default”
    2. 图片
      1. class=“img-responsive”:图片在任意尺寸都占100%
      2. 图片形状
        1. “ img src="…" alt="…" class=“img-rounded” ”:方形
        2. “ img src="…" alt="…" class=“img-circle” ”: 圆形
        3. “ img src="…" alt="…" class=“img-thumbnail” ”:相框
    3. 表格
      1. table
      2. table-bordered
      3. table-hover
    4. 表单
      1. 给表单项添加:class=“form-control”
  2. 组件
    1. 导航条
    2. 分页条
  3. 插件
    1. 轮播图

案例


<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">
    
    <title>Bootstrap HelloWorldtitle>

    
    <link href="css/bootstrap.min.css" rel="stylesheet">
    
    <script src="js/jquery-3.2.1.min.js">script>
    
    <script src="js/bootstrap.min.js">script>
    <style>
        .paddtop {
            padding-top: 10px;
        }

        .search-btn {
            float: left;
            border: 1px solid #ffc900;
            width: 90px;
            height: 35px;
            background-color: #ffc900;
            text-align: center;
            line-height: 35px;
            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>


<header class="container-fluid">
    <div class="row">
        <img src="img/top_banner.jpg" class="img-responsive">
    div>
    <div class="row paddtop">
        <div class="col-md-3">
            <img src="img/logo.jpg" class="img-responsive">
        div>
        <div class="col-md-5">
            <input class="search-input" placeholder="请输入线路名称">
            <a class="search-btn" href="#">搜索a>
        div>
        <div class="col-md-4">
            <img src="img/hotel_tel.png" class="img-responsive">
        div>

    div>
    
    <div class="row">
        <nav class="navbar navbar-default">
            <div class="container-fluid">
                
                <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 navigationspan>
                        <span class="icon-bar">span>
                        <span class="icon-bar">span>
                        <span class="icon-bar">span>
                    button>
                    <a class="navbar-brand" href="#">首页a>
                div>

                
                <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="#">Linka>li>
                        <li><a href="#">Linka>li>
                        <li><a href="#">Linka>li>
                        <li><a href="#">Linka>li>
                        <li><a href="#">Linka>li>

                    ul>
                div>
            div>
        nav>

    div>

    
    <div class="row">
        <div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
            
            <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>

            
            <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>

            
            <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">Previousspan>
            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">Nextspan>
            a>
        div>
    div>

header>

<div class="container">
    <div class="row jx">
        <img src="img/icon_5.jpg">
        <span>黑马精选span>
    div>

    <div class="row paddtop">
        <div class="col-md-3">
            <div class="thumbnail">
                <img src="img/jiangxuan_3.jpg" alt="">
                <p>上海直飞三亚5天4晚自由行(春节预售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)p>
                <font color="red">¥ 699font>
            div>
        div>
        <div class="col-md-3">
            <div class="thumbnail">
                <img src="img/jiangxuan_3.jpg" alt="">
                <p>上海直飞三亚5天4晚自由行(春节预售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)p>
                <font color="red">¥ 699font>
            div>

        div>
        <div class="col-md-3">

            <div class="thumbnail">
                <img src="img/jiangxuan_3.jpg" alt="">
                <p>上海直飞三亚5天4晚自由行(春节预售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)p>
                <font color="red">¥ 699font>
            div>
        div>
        <div class="col-md-3">

            <div class="thumbnail">
                <img src="img/jiangxuan_3.jpg" alt="">
                <p>上海直飞三亚5天4晚自由行(春节预售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)p>
                <font color="red">¥ 699font>
            div>
        div>
    div>
    <div class="row jx">
        <img src="img/icon_6.jpg">
        <span>国内游span>
    div>
    <div class="row paddtop">
        <div class="col-md-4">
            <img src="img/guonei_1.jpg">
        div>
        <div class="col-md-8">
            <div class="row">
                <div class="col-md-4">
                    <div class="thumbnail">
                        <img src="img/jiangxuan_3.jpg" alt="">
                        <p>上海直飞三亚5天4晚自由行(春节预售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)p>
                        <font color="red">¥ 699font>
                    div>
                div>
                <div class="col-md-4">
                    <div class="thumbnail">
                        <img src="img/jiangxuan_3.jpg" alt="">
                        <p>上海直飞三亚5天4晚自由行(春节预售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)p>
                        <font color="red">¥ 699font>
                    div>

                div>
                <div class="col-md-4">

                    <div class="thumbnail">
                        <img src="img/jiangxuan_3.jpg" alt="">
                        <p>上海直飞三亚5天4晚自由行(春节预售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)p>
                        <font color="red">¥ 699font>
                    div>
                div>

            div>
            <div class="row">
                <div class="col-md-4">
                    <div class="thumbnail">
                        <img src="img/jiangxuan_3.jpg" alt="">
                        <p>上海直飞三亚5天4晚自由行(春节预售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)p>
                        <font color="red">¥ 699font>
                    div>
                div>
                <div class="col-md-4">
                    <div class="thumbnail">
                        <img src="img/jiangxuan_3.jpg" alt="">
                        <p>上海直飞三亚5天4晚自由行(春节预售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)p>
                        <font color="red">¥ 699font>
                    div>

                div>
                <div class="col-md-4">

                    <div class="thumbnail">
                        <img src="img/jiangxuan_3.jpg" alt="">
                        <p>上海直飞三亚5天4晚自由行(春节预售+亲子/蜜月/休闲游首选+豪华酒店任选+接送机)p>
                        <font color="red">¥ 699font>
                    div>
                div>
            div>

        div>

    div>
div>

<footer class="container-fluid">
    <div class="row">
        <img src="img/footer_service.png" class="img-responsive">
    div>
    <div class="row company">
        江苏传智播客教育科技股份有限公司 版权所有Copyright 2006-2018, All Rights Reserved 苏ICP备16007882
    div>

footer>
body>
html>

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