js对COOKIES的操作示例

//按时间设置COOKIES函数：setCookie("name","conecan","s20");
//s是秒数，s20是代表20秒
//h是小时，h12是代表20小时
//d是天数，d30是代表30天
function setCookie(name,value,time){
var strsec = getsec(time);
var exp = new Date();
exp.setTime(exp.getTime() + strsec*1);
document.cookie = name + "="+ escape(value) + ";expires=" + exp.toGMTString();
}
function getsec(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;
}
}
//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;
}
}
//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();
}
//测试结果
setCookie("姓名","王秒秒","s120");
alert(getCookie("姓名"));