<!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> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <script type="text/javascript" src="js/jquery.js"></script> </head> <body> <div class="divMsg" title="xxdxxd">Hello World!</div> <div class="divMsg">Hello World!</div> <div class="divMsg">Hello World!</div> <div class="divMsg">Hello World!</div> <div class="divMsg">Hello World!</div> <div class="divMsg">Hello World!</div> <script type="text/javascript" > //访问.divMsg样式的第一个元素,没办法设置值给第一个元素 var domObject = $(".divMsg")[0]; //domObject.html("ffffff"); //alert(domObject); $(".divMsg").each(function() { $(this).html("update html"); }) $(domObject).html("new update html"); </script> </body> </html>