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<!DOCTYPE html> <html> <head> <title>Bootstrap 实例 - 默认的导航栏</title> <link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap.min.css"> <!-- 可选的Bootstrap主题文件（一般不用引入） --> <link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap-theme.min.css"> <link rel="stylesheet" href="/segmentfault_navbar.css"> <!-- jQuery文件。务必在bootstrap.min.js 之前引入 --> <script src="//cdn.bootcss.com/jquery/1.11.3/jquery.min.js"></script> <!-- 最新的 Bootstrap 核心 JavaScript 文件 --> <script src="//cdn.bootcss.com/bootstrap/3.3.5/js/bootstrap.min.js"></script> <script src="http://cdn.bootcss.com/bootstrap-hover-dropdown/2.0.1/twitter-bootstrap-hover-dropdown.min.js"></script> <link ref="stylesheet" href="/segmentfault_navbar.css"> </head> <body> <div class="mynav"> <div class="container"> <nav class="navbar navbar-primary"> <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="#">SegmentFault</a> </div> <form class="navbar-form navbar-left hidden-sm hidden-xs" action="/search" method="post" role="search"> <div class="input-group"> <span class="input-group-addon glyphicon glyphicon-search"></span> <input type="text" class="form-control my-input-search " placeholder="Search"> </div> </form> <!-- 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 my-first-navbar"> <li class="active"><a href="#">问答 <span class="sr-only">(current)</span></a></li> <li><a href="#">文章</a></li> <li><a href="#">活动</a></li> <li><a href="#">榜单</a></li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">···</a> <ul class="dropdown-menu"> <li><a href="#">笔记</a></li> <li><a href="#">职位</a></li> <li><a href="#">标签</a></li> <li role="separator" class="divider"></li> <li><a href="#">Separated link</a></li> <li role="separator" class="divider"></li> <li><a href="#">One more separated link</a></li> </ul> </li> </ul> <ul class="nav navbar-nav navbar-right"> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">撰写<span class="caret"></span></a> <ul class="dropdown-menu"> <li><a href="#">提问题</a></li> <li><a href="#">写文章</a></li> <li><a href="#">做笔记</a></li> </ul> </li> <li><a href="#"><span class="glyphicon glyphicon-envelope"></span></a></li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false"> <span class="glyphicon glyphicon-user"></span></a> <ul class="dropdown-menu"> <li><a href="#">我的主页</a></li> <li><a href="#">我的档案</a></li> <li><a href="#">我的笔记</a></li> <li><a href="#">账号设置</a></li> <li><a href="#">草稿箱</a></li> <li><a href="#">收藏夹</a></li> <li role="separator" class="divider"></li> <li><a href="#">退出</a></li> <li><a href="#">帮助中心</a></li> <li><a href="#">建议反馈</a></li> </ul> </li> </ul> </div><!-- /.navbar-collapse --> </div><!-- /.container-fluid --> </nav> </div> </div> <script > var searchBoxWidth = $(".my-input-search").width(); $(".my-input-search").focusin( function () { $(".my-first-navbar").css("display","none"); $(".my-input-search").css("width","434px"); } ); $(".my-input-search").focusout( function () { $(".my-first-navbar").css("display","block"); $(".my-input-search").css("width",searchBoxWidth); } ); </script> </body> </html>
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