Web基础--Bootstrap

Bootstrap：

1. 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

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。
好处：

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。
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（哪里看不懂删哪里）

下载Bootstrap
在项目中将这三个文件夹复制
创建html页面，引入必要的资源文件

模版

<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="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>

响应式布局

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：

定义容器。相当于之前的table

容器分类：

container：<mark>两边留白</mark>
container-fluid：每一种设备都是100%宽度

定义行。相当于之前的tr 样式：row
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：

xs：超小屏幕手机 (<768px)：col-xs-12
sm：小屏幕平板 (≥768px)
md：中等屏幕桌面显示器 (≥992px)
lg：大屏幕大桌面显示器 (≥1200px)

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：

按钮：class=“btn btn-default”
图片：

class=“img-responsive”：图片在任意尺寸都占100%
图片形状

<img src="…" alt="…" class=“img-rounded”>：方形
<img src="…" alt="…" class=“img-circle”> ：圆形
<img src="…" alt="…" class=“img-thumbnail”> ：相框

表格

table
table-bordered
table-hover

表单

给表单项添加：class=“form-control”

2. 组件：

导航条
分页条

3. 插件：

轮播图

案例：黑马旅游网

<!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="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>
        .search {
            margin-top: 10px;
            width: 50%;
            margin-left: 30%
        }

        
        .search-input {

            width: 100%;
        }

        .pad-top {
            padding-top: 10px;
        }

        .search-btn {

            width: 100%;
        }

        .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>

    <!-- 1.页眉部分-->

    <div class="container-fluid">

        <div class="row">
            <div class="col-xs-12 col-sm-12 col-md-12 col-lg-12">
                <img src="img/top_banner.jpg" class="img-responsive">
            </div>
        </div>

        <div class="row pad-top">
            <div class="col-xs-3 col-sm-3 col-md-3 col-lg-3">

                <img src="img/logo.jpg" class="img-responsive" alt="Image">

            </div>

            <div class="col-xs-5 col-sm-5 col-md-5 col-lg-5 ">
                <div class="input-group search ">
                    <input type="text" class="form-control search-input" placeholder="Search for...">
                    <span class="input-group-btn">
                        <button class="btn btn-default search-btn" type="submit">Go!</button>
                    </span>
                </div>
            </div>

            <div class="col-xs-4 col-sm-4 col-md-4 col-lg-4">

                <img src="img/hot_tel.jpg" class="img-responsive" alt="Image">

            </div>




        </div>

        <div class="row pad-top">
            <nav class="navbar navbar-default">
                <div class="container-fluid">
                    <!-- Brand and toggle get grouped for better mobile display -->
                    <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 navigation</span>
                            <span class="icon-bar"></span>
                            <span class="icon-bar"></span>
                            <span class="icon-bar"></span>
                        </button>
                        <a class="navbar-brand" href="#">Brand</a>
                    </div>

                    <!-- Collect the nav links, forms, and other content for toggling -->
                    <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="#">Link</a></li>
                        </ul>


                    </div><!-- /.navbar-collapse -->
                </div><!-- /.container-fluid -->
            </nav>
        </div>

        <div class="row">
            <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 class="carousel-caption">
                        </div>
                    </div>
                    <div class="item">
                        <img src="img/banner_2.jpg" alt="...">
                        <div class="carousel-caption">

                        </div>
                    </div>
                    <div class="item">
                        <img src="img/banner_3.jpg" alt="...">
                        <div class="carousel-caption">

                        </div>
                    </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>
        </div>


    </div>

    <!-- 2.主体部分-->


    <div class="container pad-top">
        <div class="row jx">
            <div class="col-xs-12 col-sm-12 col-md-12 col-lg-12">
                <img src="img/icon_5.jpg" class="" alt="Image">
                <span>黑马精选</span>
            </div>
        </div>

        <div class="row pad-top">
            <div class="col-md-3 col-lg-3 col-xs-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">&yen; 699</font>
                </div>
            </div>
            <div class="col-md-3 col-lg-3 col-xs-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">&yen; 699</font>
                </div>
            </div>
            <div class="col-md-3 col-lg-3 col-xs-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">&yen; 699</font>
                </div>
            </div>
            <div class="col-md-3 col-lg-3 col-xs-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">&yen; 699</font>
                </div>
            </div>
        </div>


        <div class="row jx pad-top">
            <img src="img/icon_6.jpg">
            <span>国内游</span>
        </div>


        <div class="row pad-top">

            <div class="col-xs-4 col-sm-4 col-md-4 col-lg-4 pad-top">


                <img src="img/guonei_1.jpg" class="img-responsive">
            </div>

            <div class="col-xs-8 col-sm-8 col-md-8 col-lg-8">

                <div class="row pad-top">

                    <div class="col-xs-4 col-sm-4 col-md-4 col-lg-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">&yen; 699</font>
                        </div>
                    </div>

                    <div class="col-xs-4 col-sm-4 col-md-4 col-lg-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">&yen; 699</font>
                        </div>
                    </div>

                    <div class="col-xs-4 col-sm-4 col-md-4 col-lg-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">&yen; 699</font>
                        </div>
                    </div>




                </div>

                <div class="row pad-top">
                    <div class="col-xs-4 col-sm-4 col-md-4 col-lg-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">&yen; 699</font>
                        </div>
                    </div>

                    <div class="col-xs-4 col-sm-4 col-md-4 col-lg-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">&yen; 699</font>
                        </div>
                    </div>

                    <div class="col-xs-4 col-sm-4 col-md-4 col-lg-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">&yen; 699</font>
                        </div>
                    </div>
                </div>


            </div>


        </div>
    </div>


    <!-- 3.页脚部分-->

    <div 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>
    </div>

</body>

</html>