复制代码 代码如下:
//JS操作cookies方法!
//写cookies
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();
}
//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();
}
//使用示例
setcookie("name","hayden");
alert(getcookie("name"));
//如果需要设定自定义过期时间
//那么把上面的setcookie 函数换成下面两个函数就ok;
//程序代码
function setcookie2(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;
}
}
//这是有设定过期时间的使用示例：
//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：d30
//暂时只写了这三种
setcookie2("name2","hayden2","s20");
alert(getcookie("name2"));
以下是几个比较常见的好用的函数：
复制代码 代码如下:
function Getcookieval(offset)
//获得cookie解码后的值
{
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
function Setcookie(name, value)
//设定cookie值
{
var expdate = new Date();
var argv = Setcookie.arguments;
var argc = Setcookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
if(expires!=null) expdate.setTime(expdate.getTime() + ( expires * 1000 ));
document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expdate.toGMTString()))
+((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain))
+((secure == true) ? "; secure" : "");
}
function Delcookie(name)
//删除cookie
{
var exp = new Date();
exp.setTime (exp.getTime() - 1);
var cval = Getcookie (name);
document.cookie = name + "=" + cval + "; expires="+ exp.toGMTString();
}
function Getcookie(name)
//获得cookie的原始值
{
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;
}
//测试
Setcookie("sunshine","1986");
alert(Getcookie("sunshine"));
