☆ 遍历 - .parent() 方法: 查找每个段落的带有 "selected" 类的父元素： <body> <ul class="level-1"> <li class="item-i">I</li> <li class="item-ii">II <ul class="level-2"> <li class="item-a">A</li> <li class="item-b">B <ul class="level-3"> <li class="item-1">1</li> <li class="item-2">2</li> <li class="item-3">3</li> </ul> </li> <li class="item-c">C</li> </ul> </li> <li class="item-iii">III</li> </ul> <script> $('li.item-a').parent().css('background-color', 'red');//class="item-a"所在的容器的环境 的背景色都改为red ($('li.item-a').parent(): 找到它的宿主) </script> </body> ☆ <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>菜鸟教程(runoob.com)</title> <style> .ancestors *{ display: block; border: 2px solid lightgrey; color: lightgrey; padding: 5px; margin: 15px;} </style> <script src="http://cdn.static.runoob.com/libs/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("span").parent().css({"color":"red","border":"2px solid red"}); }); </script> </head> <body class="ancestors">body (曾曾祖父节点) <div style="500px;">div (曾祖父节点) <ul>ul (祖父节点) <li>li (直接父节点) <span>span</span> </li> </ul> </div> </body> </html>