<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><TITLE> New Document </TITLE><META NAME="Generator" CONTENT="EditPlus"><META NAME="Author" CONTENT=""><META NAME="Keywords" CONTENT=""><META NAME="Description" CONTENT=""></HEAD>
<script language="JavaScript">
function Setcookie(name, value) { //设置名称为name,值为value的Cookie 
//var argc = SetCookie.arguments.length; //var argv = SetCookie.arguments; //var path = (argc > 3) ? argv[3] : null; //var domain = (argc > 4) ? argv[4] : null; //var secure = (argc > 5) ? argv[5] : false; document.cookie = name + "=" + value;// + //((path == null) ? "" : ("; path=" + path)) + //((domain == null) ? "" : ("; domain=" + domain)) + //((secure == true) ? "; secure" : ""); 
} function Deletecookie(name) { //删除名称为name的Cookie var exp = new Date(); exp.setTime (exp.getTime() - 1); var cval = GetCookie (name); document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString(); } function Clearcookie() //清除COOKIE { var temp=document.cookie.split(";"); var loop3; var ts; for (loop3=0;loop3<temp.length;loop++) { ts=temp[loop3].split("=")[0]; if (ts.indexOf('mycat')!=-1) DeleteCookie(ts); //如果ts含“mycat”则执行清除 } } function getCookieVal(offset) { //取得项名称为offset的cookie值 var endstr = document.cookie.indexOf (";", offset); if (endstr == -1) endstr = document.cookie.length; return unescape(document.cookie.substring(offset, endstr)); } function GetCookie(name) { //取得名称为name的cookie值 var arg = name + "="; var alen = arg.length; var clen = document.cookie.length; var i = 0; while (i < clen) { var j = i + alen; if (document.cookie.substring(i, j) == arg) return getCookieVal (j); i = document.cookie.indexOf(" ", i) + 1; if (i == 0) break; } return null; } Setcookie("test","value!!!!!!!!");alert(GetCookie("test"));function cc() { /* check for a cookie */ if (document.cookie == "") { /* if a cookie is not found - alert user - change cookieexists field value to false */ alert("COOKIES need to be enabled!"); /* If the user has Cookies disabled an alert will let him know that cookies need to be enabled to log on.*/ document.Form1.cookieexists.value ="false" } else { /* this sets the value to true and nothing else will happen, the user will be able to log on*/ document.Form1.cookieexists.value ="true" } } /* Set a cookie to be sure that one exists. Note that this is outside the function*/ document.cookie = 'killme' + escape('nothing') 
</script><BODY onbeforeunload="RunOnBeforeUnload()" id="Posts"><FORM Name="Form1" id="Form1"> <input type="text" name="cookieexists" value="false"></FORM> <a href="test.html">中微家校通</a></BODY></HTML><SCRIPT LANGUAGE="JavaScript"><!--g_blnCheckUnload = true;function RunOnBeforeUnload() { if (g_blnCheckUnload) { window.event.returnValue = 你确是要放弃操作吗？'; }}//--></SCRIPT>2.html（简单的操作cookies）
<html><head><title> 新文档 </title><meta name="Generator" content="EditPlus"><meta name="Author" content="FlashSoft"><meta name="Keywords" content=""><meta name="Description" content="FlashSoft"><meta http-equiv="Content-Type" content="text/html;charset=gb2312"></head><body><script language="JavaScript" type="Text/JavaScript"><!--// 实在懒得写了,为了减少字节量//添加和获得都已经写好了,删除,你只要把时间改为-1就可以了,懒得封装了,实在无意义[代码moz兼容,值得一提,moz跟ie不是一个地方存cookie的]function Cookie(){ this.SetValue=function(name,value,hours,path,domain,secure){ var str=new String(); var nextTime=new Date(); nextTime.setHours(nextTime.getHours()+hours); str=name+"="+escape(value); if(hours) str+=";expires="+nextTime.toGMTString(); if(path) str+=";path="+path; if(domain) str+=";domain="+domain; if(secure) str+=";secure"; document.cookie=str; } this.GetValue=function(name){ var rs=new RegExp("(^|)"+name+"=([^;]*)(;|$)","gi").exec(document.cookie),tmp; if(tmp=rs) return unescape(tmp[2]); return null; } }var _c=new Cookie();_c.SetValue("list1","啊",1);_c.SetValue("list2","噢",1);alert(_c.GetValue("list2"))document.writeln(document.cookie);//--></script></body></html>