一、jQuery常用筛选器有以下几种：
1、下一个标签
$(document).next()
2、上一个标签
$(document).prev()
3、父亲标签
$(document).parent()
4、孩子标签
$(document).children()
5、兄弟标签
$(document).siblings()
6、子孙中查找
$(document).find(‘.i1‘) ??/*在子孙中查找class属性为i1的标签*/
二、具体应用
实现点击菜单栏出现当前菜单下的内容，并隐藏其它菜单下的内容：
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 ????<meta charset="UTF-8"> 5 ????<title>Document</title> 6 ????<style> 7 ????????.menu{ 8 ????????????background-color: yellow; 9 ????????????width: 200px;10 ????????}11 ????????.content{12 ????????????background-color: red;13 ????????????width: 100px;14 ????????}15 ????????.hide{16 ????????????display: none;17 ????????}18 ????</style>19 </head>20 <body>21 ????<div>22 ????????<div>23 ????????????<div class="menu">目录1</div>24 ????????????<div class="content hide">内容1</div>25 ????????????<div class="content hide">内容1</div>26 ????????</div>27 ????????<div>28 ????????????<div class="menu">目录2</div>29 ????????????<div class="content hide">内容2</div>30 ????????????<div class="content hide">内容2</div>31 ????????</div> ???????32 ????????<div>33 ????????????<div class="menu">目录3</div>34 ????????????<div class="content hide">内容3</div>35 ????????????<div class="content hide">内容3</div>36 ????????</div> ???????37 ????</div>38 ????<script src=‘jquery-3.2.1.js‘></script>39 ????<script type="text/javascript">40 ????????$(‘.menu‘).click(function(){41 ????????????$(this).siblings().removeClass(‘hide‘);42 ????????????$(this).parent().siblings().find(‘.content‘).addClass(‘hide‘)43 ????????})44 ????</script>45 </body>46 </html>jQuery筛选器
原文地址：http://www.cnblogs.com/Charles9703/p/7440485.html