<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>可见性选择器</title> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> <style type="text/css"> .yang{ border-collapse: collapse; width:500px;height:30px;border:1px solid red;"} </style> <script type="text/javascript" src="jquery-1.7.1.min.js"></script> <script type="text/javascript"> /* :hidden //匹配所有隐藏的元素 :visible //匹配所有显示的元素 */ window.onload=function(){ $('#btnOk').click(function(){ //匹配匹配所有显示的元素并隐藏 $('div:visible').hide(); }); }; </script> </head> <body> <div>div1</div> <div style="display:none">div2</div> <hr/> <input type="button" id='btnOk' value='确定' /> </body> </html>