选取指定类型(p)父元素下的第几个子元素:
实例:
<!DOCTYPE html> <html lang=‘zh-cn‘> <head> <title>Insert you title</title> <meta http-equiv=‘description‘ content=‘this is my page‘> <meta http-equiv=‘keywords‘ content=‘keyword1,keyword2,keyword3‘> <meta http-equiv=‘Content-Type‘ content=‘text/html; charset=utf-8‘> <script type=‘text/javascript‘ src=‘./js/jquery-1.12.1.min.js‘></script> <style type=‘text/css‘ > *{margin:0;padding:0;} html{font:400 15px/1.2em ‘Courier New‘;color:#666;} div > *{margin:10px 0;cursor:pointer;} #demo{width:750px;margin:75px auto;} button{padding:5px 15px;border:0;outline:none;margin-top:-5px;border-radius:2px;font:400 12px/1.2em ‘Courier New‘;} .active{background-color:yellow;transition: .3s;} .hover{background-color:red;transition: .3s} p{text-indent:8px;} </style> <script type=‘text/javascript‘> /** 概述 选择同属于一个父元素之下,并且标签名相同的子元素中的第n个。 因为jQuery的实现:nth-是严格来自CSS规范,n值是“1-indexed”,也就是说,从1开始计数。对于所有其他选择器表达式比如:eq()或 :even ,jQuery遵循JavaScript的“0索引”的计数。 */ $(function(){ $("span:nth-of-type(2)").addClass(‘hover‘); }); </script> </head> <body> <div id=‘demo‘> <div> <span>John</span> <b>Kim</b> <span>Adam</span> <b>Rafael</b> <span>Oleg</span> </div> <div> <b>Dave</b> <span>Ann</span> </div> <div> <i><span>Maurice</span></i> <span>Richard</span> <span>Ralph</span> <span>Jason</span> </div> </div> </body> </html>
时间: 2024-10-17 16:55:58