JavaScript中Cookie操作

function setCookie(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();
document.cookie = name + "="+ value + ";expires=" + exp.toGMTString();
};

function getCookie(name)
{

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

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();
};

function setCookieWithTime(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)
{
alert(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;
}
};