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<link rel="stylesheet" href="bootstrap/css/bootstrap.css"> <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script> <link rel="stylesheet" href="bootstrap/js/jquery-3.3.1.js"> <style> .select { background: red; } </style> </head> <body> <nav class="navbar navbar-default" role="navigation"> <div class="container-fluid"> <div class="navbar-header"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#example-navbar-collapse"> <span class="sr-only">切换导航</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <a class="navbar-brand" href="#">啦啦啦</a> </div> <div class="collapse navbar-collapse" id="example-navbar-collapse"> <ul class="nav navbar-nav"> <li class="active"><a href="javascript:void(0)">iOS</a></li> <li><a href="javascript:void(0)">SVN</a></li> <li class="dropdown"> <a href="javascript:void(0)" class="dropdown-toggle" data-toggle="dropdown"> Java <b class="caret"></b> </a> <ul class="dropdown-menu"> <li><a href="javascript:void(0)">jmeter</a></li> <li><a href="#">EJB</a></li> <li><a href="#">Jasper Report</a></li> <li class="divider"></li> <li><a href="#">分离的链接</a></li> <li class="divider"></li> <li><a href="#">另一个分离的链接</a></li> </ul> </li> </ul> </div> </div> </nav> <div class="bd-com" id="bd-com"> </div> <script> $(function () { //将网页装载到名为pages的常量数组中 const pages = ["01.html", "02.html", "03.html", "col.html"]; //主页名装载的默认页面 $("#bd-com").load(pages[0]); //导航栏点击变色兄弟元素隐藏 $(".nav li").click(function () { $(this).addClass("select").siblings().removeClass("select"); //头部装载页面 $("#bd-com").load(pages[$(this).index()]); }); }) </script> <script src="bootstrap/js/jquery-3.3.1.js"></script> <script src="bootstrap/js/bootstrap.js"></script> </body>