<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> ul li a.active{color:red;} </style> </head> <body> <ul class="between"> <li><a href="#" class="active">qu</a></li> <li><a href="#">qu</a></li> <li><a href="#">qu</a></li> <li><a href="#">qu</a></li> <li><a href="#">qu</a></li> </ul> <script src="jquery-3.1.1.min.js"></script> <script type="text/javascript"> $(function(){ $('li').children().on("click",function(){
//原有的active删除，点击的添加，兄弟元素上的class删除即可 $('.active').removeClass("active"); $(this).addClass("active").siblings().removeClass("active"); }) }) </script> </body> </html>
