前端技术Bootstrap的hello world

对于用户来说,界面就是程序本身。那么一个漂亮的web一定是你继续使用这个应用的前题。

这一节我们来一起写个Bootstrap的hello wrold。

Bootstrap 

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。

如何使用Bootstrap?                                             

Bootstrap的使用一般有两种方法。一种是引用在线的Bootstrap的样式,一种是将Bootstrap下载到本地进行引用。

引用在线样式:

引用在线样式的好处就是不用本地安装Bootstrap,也是不用考虑引用时的路径问题。缺点是担心性能问题,一旦在线样式挂了,那么自己的网站页面样式也就乱掉了。

http://v3.bootcss.com/getting-started/#download

Bootstrap中文网为 Bootstrap 专门构建了自己的免费 CDN 加速服务。

使用方法非常简单:

<!DOCTYPE html>
<html lang='en'>
  <head>
    <meta charset='utf-8'>
    <title>Hello Bootstrap</title>
    <!-- Bootstrap core CSS -->
    <link href='http://cdn.bootcss.com/bootstrap/3.2.0/css/bootstrap.min.css' rel='stylesheet'>
    </head>
    <body>
        <h3>hello Bootstrap<h3>
    </body>
</html>

<link href='http://cdn.bootcss.com/bootstrap/3.2.0/css/bootstrap.min.css' rel='stylesheet'>  这一行已经将在线的样式引进来了。注意本文使用的是当前最新的Bootstrap3.2.0。

使用本地的Bootstrap

下载Bootstrap到本地进行解压,解压完成,你将得到一个Bootstrap目录,结构如下:

bootstrap/
├── css/
│   ├── bootstrap.css
│   ├── bootstrap.min.css
│   ├── bootstrap-theme.css
│   └── bootstrap-theme.min.css
├── js/
│   ├── bootstrap.js
│   └── bootstrap.min.js
└── fonts/
    ├── glyphicons-halflings-regular.eot
    ├── glyphicons-halflings-regular.svg
    ├── glyphicons-halflings-regular.ttf
    └── glyphicons-halflings-regular.woff

本地调用如下:

<!DOCTYPE html>
<html lang='en'>
  <head>
    <meta charset='utf-8'>
    <title>Hello Bootstrap</title>
    <!-- Bootstrap core CSS -->
    <link href='./bootstrap-3.2.0-dist/css/bootstrap.min.css' rel='stylesheet'>
    <style type='text/css'>
      body {
        background-color: #CCC;
      }
    </style>
    </head>
    <body>
        <h3>hello Bootstrap<h3>
    </body>
</html>

<link href='./bootstrap-3.2.0-dist/css/bootstrap.min.css' rel='stylesheet'>  --表示引入当前目录下的Bootstrap样式。

<link href='D:/bootstrap-3.2.0-dist/css/bootstrap.min.css' rel='stylesheet'> --当然也可以使用绝对路径。

我们多加了一个背景色效果如下:

下面利用Bootstrap的样式编写一个网站出来。

添加导航行栏和登录框

<nav class='navbar navbar-inverse navbar-fixed-top' role='navigation'>
      <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='#'>首页</a>
          <a class='navbar-brand' href='#'>测试</a>
          <a class='navbar-brand' href='#'>开发</a>
        </div>
        <div id='navbar' class='navbar-collapse collapse'>
          <form class='navbar-form navbar-right' role='form'>
            <div class='form-group'>
              <input type='text' placeholder='Email' class='form-control'>
            </div>
            <div class='form-group'>
              <input type='password' placeholder='Password' class='form-control'>
            </div>
            <button type='submit' class='btn btn-success'>Sign in</button>
          </form>
        </div><!--/.navbar-collapse -->
      </div>
    </nav>

浏览器效果如下:

添加一篇文章

<div class='jumbotron'>
  <div id='content' class='row-fluid'>
    <h4>Hello, world!</h4>
    <p class='blog-post-meta'>January 1, 2014 by <a href='#'>Mark</a></p>
    <p>This is a template for a simple marketing or informational website. It includes a large callout called a jumbotron and three supporting pieces of content. Use it as a starting point to create something more unique.</p>
    <p><a class='btn btn-primary btn-lg' role='button'>阅读全文 &raquo;</a></p>
  </div>
</div>

浏览器效果如下:

添加底部介绍与友情链接  

<div class='col-sm-3 col-sm-offset-1 blog-sidebar'>
          <div class='sidebar-module sidebar-module-inset'>
            <h4>About</h4>
            <p>Etiam porta <em>sem malesuada magna</em> mollis euismod. Cras mattis consectetur purus sit amet fermentum. Aenean lacinia bibendum nulla sed consectetur.</p>
          </div>
          <div class='sidebar-module'>
            <h4>Elsewhere</h4>
            <ol class='list-unstyled'>
              <li><a href='#'>博客园</a></li>
              <li><a href='#'>开源中国</a></li>
              <li><a href='#'>infoq</a></li>
            </ol>
          </div>
    </div>

最终效果如下:

 完整代码:

加载中...

<!DOCTYPE html>
<html lang='en'>
  <head>
    <meta charset='utf-8'>
    <title>Hello Bootstrap</title>
    <!-- Bootstrap core CSS -->
    <link href='./bootstrap-3.2.0-dist/css/bootstrap.min.css' rel='stylesheet'>
    <style type='text/css'>
      body {
        background-color: #CCC;
      }
    </style>
    </head>
    <body>
     <nav class='navbar navbar-inverse navbar-fixed-top' role='navigation'>
      <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='#'>首页</a>
          <a class='navbar-brand' href='#'>测试</a>
          <a class='navbar-brand' href='#'>开发</a>
        </div>
        <div id='navbar' class='navbar-collapse collapse'>
          <form class='navbar-form navbar-right' role='form'>
            <div class='form-group'>
              <input type='text' placeholder='Email' class='form-control'>
            </div>
            <div class='form-group'>
              <input type='pass<a href="http://www.it165.net/edu/ebg/" target="_blank" class="keylink">word</a>' placeholder='Pass<a href="http://www.it165.net/edu/ebg/" target="_blank" class="keylink">word</a>' class='form-control'>
            </div>
            <button type='submit' class='btn btn-success'>Sign in</button>
          </form>
        </div><!--/.navbar-collapse -->
      </div>
    </nav>
    
    <div class='jumbotron'>
      <div id='content' class='row-fluid'>
        <h4>Hello, world!</h4>
        <p class='blog-post-meta'>January 1, 2014 by <a href='#'>Mark</a></p>
        <p>This is a template for a simple marketing or informational website. It includes a large callout called a jumbotron and three supporting pieces of content. Use it as a starting point to create something more unique.</p>
        <p><a class='btn btn-primary btn-lg' role='button'>阅读全文 &raquo;</a></p>
      </div>
    </div>

    
    <div class='col-sm-3 col-sm-offset-1 blog-sidebar'>
          <div class='sidebar-module sidebar-module-inset'>
            <h4>About</h4>
            <p>Etiam porta <em>sem malesuada magna</em> mollis euismod. Cras mattis consectetur purus sit amet fermentum. Aenean lacinia bibendum nulla sed consectetur.</p>
          </div>
          <div class='sidebar-module'>
            <h4>Elsewhere</h4>
            <ol class='list-unstyled'>
              <li><a href='#'>博客园</a></li>
              <li><a href='#'>开源中国</a></li>
              <li><a href='#'>infoq</a></li>
            </ol>
          </div>
    </div>

    </body>
</html>

样式的继承                                                          

你一定很好奇,这些样式是怎么玩的?如何你细心的就会留意到div 标签的class属性。

通过class的属性值去继承Bootstrap的样式定义,那么就达到了某种样式效果。

<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'> 
<head> 
    <meta charset='utf-8' /> 
    <title>自定义样式</title>
    <!--自定义侧边栏样式-->
    <style> 
        .divcss5-right{320px; height:120px;border:1px solid #F00;float:right}
    </style> 
</head> 
<body>
    <!--class属性引用自定义样式--> 
    <div class='divcss5-right'>
        <h4>友情链接:</h4>
            <ol class='list-unstyled'>
              <li><a href='#'>博客园</a></li>
              <li><a href='#'>开源中国</a></li>
              <li><a href='#'>infoq</a></li>
            </ol>
    </div> 
</body> 
</html> 

玩前端就是要不断的修改里面的属性或信息,然后看浏览器上的展示效果。

原文地址:https://www.cnblogs.com/a354823200/p/4497586.html