Bootstrap 教程
Bootstrap 導(dǎo)航條
簡介
使用 Bootstrap，您可以創(chuàng)建靜態(tài)的導(dǎo)航條。在本教程中將教您如何做到這點(diǎn)。
我們將使用一個帶有內(nèi)容的 HTML5 頁面，并看看如何添加一個頭部導(dǎo)航條。下面是最后的輸出結(jié)果：
下面是不帶任何內(nèi)容的頁面的 HTML5 代碼。
<!DOCTYPE html> <html lang="en"> <head> ???? <meta charset="utf-8"> ???? <title>Bootstrap基本的基于與標(biāo)簽的導(dǎo)航</title> ???? <meta name="description" content="Bootstrap Basic Tab Based Navigation Example"> ???? <link href="../bootstrap/twitter-bootstrap-v2/docs/assets/css/bootstrap.css" rel="stylesheet"> </head> <body> <!-- 我們將在這創(chuàng)建導(dǎo)航 --> </body> </html>
為了創(chuàng)建包含導(dǎo)航的基本結(jié)構(gòu)，您需要在上面顯示的 HTML5 代碼中，緊跟著 標(biāo)簽的后邊插入下面的代碼：
<div class="navbar navbar-fixed-top"> ????<div class="navbar-inner"> ????????<div class="container"> ????????????<!--navigation does here--> ????????</div> ????</div> </div>
現(xiàn)在，讓我們把 替換為下面的代碼，用來創(chuàng)建導(dǎo)航的第一個集合。請注意，這里的 "brand" class 以不同的方式呈現(xiàn)，這可以用來呈現(xiàn)您的公司名稱或組織名稱。
<ul class="nav"> ????<li class="active"> ????????<a class="brand" href="#">json</a> ????</li> ????<li><a href="#">About</a></li> ????<li><a href="#">Portfolio</a></li> ????<li><a href="#">Contact</a></li> </ul>
如果需要創(chuàng)建下拉菜單，需要緊跟著在最后一個代碼塊中顯示的 HTML 代碼后，插入下面的代碼。
<ul class="nav"> ????<li class="dropdown"> ????????<a href="#" ???????? class="dropdown-toggle" ???????? data-toggle="dropdown"> ????????????Services ????????????<b class="caret"></b> ????????</a> ????????<ul class="dropdown-menu"> ????????????<li><a href="#">Web Design</a></li> ????????????<li><a href="#">Web development</a></li> ????????????<li><a href="#">Wordpress Theme development</a></li> ????????</ul> ????</li> </ul>
但是，由于 Bootstrap 下拉菜單需要用到 JavaScript，所以您需要在 HTML 頁面中插入下面兩行代碼。您可以把它們插入到 標(biāo)簽前面。
<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/jquery.js"></script> <script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-dropdown.js"></script>
如果要向?qū)Ш綏l中插入一個搜索表單，只需在包含下拉菜單列表的 <ul> 后，插入下面的代碼。請注意，class "pull-left" 是靠左對齊搜索表單。如果您想要靠右對齊，請使用 "pull-right" class。
<form class="navbar-search pull-left"> ????<input type="text" class="search-query" placeholder="Search"> </form>
現(xiàn)在，我們想要項導(dǎo)航條中插入交互按鈕，位于導(dǎo)航條的右部。我們將插入 Google Plus、Facebook Like 和 Tweet 按鈕。您需要在搜索表單的后邊插入下面的代碼。
<ul class="nav pull-right">
????<li class="dropdown">
????????<a href="#"
???????? class="dropdown-toggle"
???????? data-toggle="dropdown">
????????????Social
????????????<b class="caret"></b>
????????</a>
????????<ul class="dropdown-menu">
????????????<li class="socials"><!-- 將這個標(biāo)簽放置在要渲染的+ 1按鈕的位置 -->
????????????????<g:plusone annotation="inline" width="150"></g:plusone>
????????????</li>
????????????<li class="socials"><div class="fb-like" data-send="false" data-width="150" data-show-faces="true"></div></li>
????????????<li class="socials"><a class="twitter-share-button">Tweet</a>
????????????????<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="http://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script></li>
????????</ul>
????</li>
</ul>
class "socials" 不是 bootstrap.css 的一部分。由于我們想要讓所有的交互按鈕都居中對齊，所以我們需要通過它創(chuàng)建一些填充（padding）。代碼如下：
.socials {
padding: 10px;
}
您可以把它直接寫在頁面上，用 包圍起來，也可以把它添加到外部的 CSS 文件，然后進(jìn)行引用。
最后您需要插入兩塊代碼。一個用于 Facebook 按鈕，另一個用于 Google Plus。這些是由 Facebook 和 Google 提供的用于動態(tài)插入按鈕到您的頁面中。
所以，在 body 的開始標(biāo)簽后面，插入下面代碼，這個是用于 Facebook
<div id="fb-root"></div>
<script>(function(d, s, id) {
????????var js, fjs = d.getElementsByTagName(s)[0];
????????if (d.getElementById(id)) return;
????????js = d.createElement(s); js.id = id;
????????js.src = "http://connect.facebook.net/en_GB/all.js#xfbml=1";
????????fjs.parentNode.insertBefore(js, fjs);
????}(document, 'script', 'facebook-jssdk'));</script>
然后在 body 的結(jié)束標(biāo)簽前面，插入下面代碼，這個是用于 Google Plus
<script type="text/javascript">
????(function() {
????????var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
????????po.src = 'https://apis.google.com/js/plusone.js';
????????var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
????})();
</script>
下面是最后的代碼
實例
<!DOCTYPE html>
<html lang="en">
<head>
????<meta charset="utf-8">
????<title>Bootstrap導(dǎo)航實例</title>
????<meta name="description" content="Bootstrap navbar Example">
????<link href="../bootstrap/twitter-bootstrap-v2/docs/assets/css/bootstrap.css" rel="stylesheet">
????<style type="text/css">
????????.socials {
????????????padding: 10px;
????????}
????</style>
</head>
<body>
<div id="fb-root"></div>
<script>(function(d, s, id) {
????????var js, fjs = d.getElementsByTagName(s)[0];
????????if (d.getElementById(id)) return;
????????js = d.createElement(s); js.id = id;
????????js.src = "http://connect.facebook.net/en_GB/all.js#xfbml=1";
????????fjs.parentNode.insertBefore(js, fjs);
????}(document, 'script', 'facebook-jssdk'));</script>
<div class="navbar navbar-fixed-top">
????<div class="navbar-inner">
????????<div class="container">
????????????<ul class="nav">
????????????????<li class="active">
????????????????????<a class="brand" href="#">w3cschool</a>
????????????????</li>
????????????????<li><a href="#">About</a></li>
????????????????<li><a href="#">Portfolio</a></li>
????????????????<li><a href="#">Contact</a></li>
????????????</ul>
????????????<ul class="nav">
????????????????<li class="dropdown">
????????????????????<a href="#"
???????????????????? class="dropdown-toggle"
???????????????????? data-toggle="dropdown">
????????????????????????Services
????????????????????????<b class="caret"></b>
????????????????????</a>
????????????????????<ul class="dropdown-menu">
????????????????????????<li><a href="#">Web Design</a></li>
????????????????????????<li><a href="#">Web development</a></li>
????????????????????????<li><a href="#">WordPress Theme development</a></li>
????????????????????</ul>
????????????????</li>
????????????</ul>
????????????<form class="navbar-search pull-left">
????????????????<input type="text" class="search-query" placeholder="Search">
????????????</form>
????????????<ul class="nav pull-right">
????????????????<li class="dropdown">
????????????????????<a href="#"
???????????????????? class="dropdown-toggle"
???????????????????? data-toggle="dropdown">
????????????????????????Social
????????????????????????<b class="caret"></b>
????????????????????</a>
????????????????????<ul class="dropdown-menu">
????????????????????????<li class="socials"><!-- 將這個標(biāo)簽放置在要渲染的+ 1按鈕的位置 -->
????????????????????????????<g:plusone annotation="inline" width="150"></g:plusone>
????????????????????????</li>
????????????????????????<li class="socials"><div class="fb-like" data-send="false" data-width="150" data-show-faces="true"></div></li>
????????????????????????<li class="socials"><a class="twitter-share-button">Tweet</a>
????????????????????????????<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="http://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script></li>
????????????????????</ul>
????????????????</li>
????????????</ul>
????????</div>
????</div>
</div>
<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/jquery.js"></script>
<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-dropdown.js"></script>
<script type="text/javascript">
????(function() {
????????var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
????????po.src = 'https://apis.google.com/js/plusone.js';
????????var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
????})();
</script>
</body>
</html>
<html lang="en">
<head>
????<meta charset="utf-8">
????<title>Bootstrap導(dǎo)航實例</title>
????<meta name="description" content="Bootstrap navbar Example">
????<link href="../bootstrap/twitter-bootstrap-v2/docs/assets/css/bootstrap.css" rel="stylesheet">
????<style type="text/css">
????????.socials {
????????????padding: 10px;
????????}
????</style>
</head>
<body>
<div id="fb-root"></div>
<script>(function(d, s, id) {
????????var js, fjs = d.getElementsByTagName(s)[0];
????????if (d.getElementById(id)) return;
????????js = d.createElement(s); js.id = id;
????????js.src = "http://connect.facebook.net/en_GB/all.js#xfbml=1";
????????fjs.parentNode.insertBefore(js, fjs);
????}(document, 'script', 'facebook-jssdk'));</script>
<div class="navbar navbar-fixed-top">
????<div class="navbar-inner">
????????<div class="container">
????????????<ul class="nav">
????????????????<li class="active">
????????????????????<a class="brand" href="#">w3cschool</a>
????????????????</li>
????????????????<li><a href="#">About</a></li>
????????????????<li><a href="#">Portfolio</a></li>
????????????????<li><a href="#">Contact</a></li>
????????????</ul>
????????????<ul class="nav">
????????????????<li class="dropdown">
????????????????????<a href="#"
???????????????????? class="dropdown-toggle"
???????????????????? data-toggle="dropdown">
????????????????????????Services
????????????????????????<b class="caret"></b>
????????????????????</a>
????????????????????<ul class="dropdown-menu">
????????????????????????<li><a href="#">Web Design</a></li>
????????????????????????<li><a href="#">Web development</a></li>
????????????????????????<li><a href="#">WordPress Theme development</a></li>
????????????????????</ul>
????????????????</li>
????????????</ul>
????????????<form class="navbar-search pull-left">
????????????????<input type="text" class="search-query" placeholder="Search">
????????????</form>
????????????<ul class="nav pull-right">
????????????????<li class="dropdown">
????????????????????<a href="#"
???????????????????? class="dropdown-toggle"
???????????????????? data-toggle="dropdown">
????????????????????????Social
????????????????????????<b class="caret"></b>
????????????????????</a>
????????????????????<ul class="dropdown-menu">
????????????????????????<li class="socials"><!-- 將這個標(biāo)簽放置在要渲染的+ 1按鈕的位置 -->
????????????????????????????<g:plusone annotation="inline" width="150"></g:plusone>
????????????????????????</li>
????????????????????????<li class="socials"><div class="fb-like" data-send="false" data-width="150" data-show-faces="true"></div></li>
????????????????????????<li class="socials"><a class="twitter-share-button">Tweet</a>
????????????????????????????<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="http://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script></li>
????????????????????</ul>
????????????????</li>
????????????</ul>
????????</div>
????</div>
</div>
<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/jquery.js"></script>
<script src="../bootstrap/twitter-bootstrap-v2/docs/assets/js/bootstrap-dropdown.js"></script>
<script type="text/javascript">
????(function() {
????????var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
????????po.src = 'https://apis.google.com/js/plusone.js';
????????var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
????})();
</script>
</body>
</html>
請注意，您需要在 body 的開始標(biāo)簽后添加一個 40px 的填充（padding）。并把它添加在核心 Bootstrap CSS 之后，可選的響應(yīng)式 CSS 之前。
Bootstrap 也允許您創(chuàng)建響應(yīng)式的導(dǎo)航條。下面是代碼：
實例
<div class="navbar">
????<div class="navbar-inner">
????????<div class="container">
????????????<!-- .btn-navbar is used as the toggle for collapsed navbar content -->
????????????<a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
????????????????<span class="icon-bar"></span>
????????????????<span class="icon-bar"></span>
????????????????<span class="icon-bar"></span>
????????????</a>
????????????<!-- Be sure to leave the brand out there if you want it shown -->
????????????<a class="brand" href="#">Project name</a>
????????????<!-- Everything you want hidden at 940px or less, place within here -->
????????????<div class="nav-collapse">
????????????????<!-- .nav, .navbar-search, .navbar-form, etc -->
????????????</div>
????????</div>
????</div>
</div>
????<div class="navbar-inner">
????????<div class="container">
????????????<!-- .btn-navbar is used as the toggle for collapsed navbar content -->
????????????<a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
????????????????<span class="icon-bar"></span>
????????????????<span class="icon-bar"></span>
????????????????<span class="icon-bar"></span>
????????????</a>
????????????<!-- Be sure to leave the brand out there if you want it shown -->
????????????<a class="brand" href="#">Project name</a>
????????????<!-- Everything you want hidden at 940px or less, place within here -->
????????????<div class="nav-collapse">
????????????????<!-- .nav, .navbar-search, .navbar-form, etc -->
????????????</div>
????????</div>
????</div>
</div>