巧用JS设置cookie、读取cookie、删除cookie

1、//写cookies function setCookie(name,value,time){     var strtimes = gettimes(time);     var exp = new Date();     exp.setTime(exp.getTime() + strtimes*1);     document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString(); } function gettimes(str){    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;    } } 

2、//读取cookies function getCookie(name) {     var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");     if(arr=document.cookie.match(reg))         return unescape(arr[2]);     else         return null; } 

3、//删除cookies function delCookie(name) {     var exp = new Date();     exp.setTime(exp.getTime() - 1);     var cval=getCookie(name);     if(cval!=null)         document.cookie= name + "="+cval+";expires="+exp.toGMTString(); } 

4、//使用示例 setCookie("name","hayden"); alert(getCookie("name"));