<!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=gb2312" /> <title>无标题文档</title> <script language=Javascript> var tem = ""; function checkAll(e,itemName,thisvalue) { tem= document.getElementById("arrayid").value; var aa=document.getElementsByName(itemName); var bb=document.getElementById('arrayid'); if(e.checked==true){ tem += thisvalue+","; } else{ tem = tem.replace(thisvalue+",",""); } bb.value=tem; for (var i=0; i </head> <body> </body> </html> [Ctrl+A 全选 注:引入外部Js需再刷新一下页面才能执行]