jsJS写入cookies、读取cookies、删除cookies、定义cookies失效时间
<html><script language="javascript">//写入cookiesfunction SetAsaiCookie(name,value){var Days = 30;var exp = new Date();exp.setTime(exp.getTime() + Days*24*60*60*1000);document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();}//读取cookiesfunction GetAsaiCookie(name){var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");if(arr=document.cookie.match(reg)) return unescape(arr[2]);else return null;}//删除cookiesfunction DelAsaiCookie(name){var exp = new Date();exp.setTime(exp.getTime() - 1);var cval=GetAsaiCookie(name);if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();}//使用示例//SetAsaiCookie("Asai","77ya.com");//alert(GetAsaiCookie("Asai"));//===============================================//设定过期时间的cookies写入过程//s20是代表20秒//h是指小时，如12小时则是：h12//d是天数，30天则：d30function SetAsaiCookieT(name,value,time){var strsec = GetAsaiTime(time);var exp = new Date();exp.setTime(exp.getTime() + strsec*1);document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();}function GetAsaiTime(str){// alert(str); //是否显示失效时间 var str1=str.substring(1,str.length)*1; var str2=str.substring(0,1); if (str2=="s"){ return str1*1000; }else if (str2=="h"){ return str1*60*60*1000; }else if (str2=="d"){ return str1*24*60*60*1000; }}//使用示例//SetAsaiCookieT("Asai","77ya.com","s20");function AsaiKeyJs(){if(window.event.ctrlKey && window.event.altKey && window.event.shiftKey && event.keyCode==112){SetAsaiCookieT("AsaiAD","1","s300");alert("您已经成功隐藏广告(有效时间：5分钟)！如需打开广告请使用ctrl+alt+shift+F2")}if(window.event.ctrlKey && window.event.altKey && window.event.shiftKey && event.keyCode==113){DelAsaiCookie("AsaiAD");alert("您已经成功恢复广告显示！如需打开广告请使用ctrl+alt+shift+F1")}if(window.event.ctrlKey && window.event.altKey && window.event.shiftKey && event.keyCode==32){SetAsaiCookie("AsaiAD","1");alert("您已经成功恢复广告显示！如需打开广告请使用ctrl+alt+shift+F2")}}</script><body onkeydown="AsaiKeyJs()">你可以按键盘上面的“ctrl+alt+shift+F1”键、“ctrl+alt+shift+F2”键、“ctrl+alt+shift+空格键”键进行测试；</body ></html>?