如何设置这个cookie永不过期 [英] how to set this cookie to never expire
问题描述
我有一个函数来创建一个传递cookie的名称,值和过期(以天为单位)的cookie。
I have a function to create a cookie passing in the name, value and expiration (in days) of the cookie.
这里是函数:
function setCookie(c_name,value,exdays) {
var exdate=new Date();
exdate.setDate(exdate.getDate() + exdays);
var c_value=escape(value) + ((exdays==null) ? "" : ";
expires="+exdate.toUTCString());
document.cookie=c_name + "=" + c_value;
}
function getCookie(c_name) {
var i,x,y,ARRcookies=document.cookie.split(";");
for (i=0;i<ARRcookies.length;i++) {
x=ARRcookies[i].substr(0,ARRcookies[i].indexOf("="));
y=ARRcookies[i].substr(ARRcookies[i].indexOf("=")+1);
x=x.replace(/^\s+|\s+$/g,"");
if (x==c_name) {
return unescape(y);
}
}
}
但是我需要做什么来设置cookie永不过期?
The function works as expected, but what do I need to do to set the cookie never expire?
推荐答案
没有办法设置为永不过期
。
这不是javascript的限制,它不是cookie的规范的一部分 http://www.faqs .org / rfcs / rfc2965.html 。
There is no way to set to never expire
.
It's not a javascript limitation, it's just not the part of the specification of the cookie http://www.faqs.org/rfcs/rfc2965.html.
您可以设置为将来的远期日期。例如设置为20年从现在调用 setCookie
与 20 * 365
为 exdays
参数,因为你 setCookie
函数期望它到期前多少天。如下
You can set to a far date in the future. for example to set it for 20years from now call setCookie
with 20*365
as exdays
parameter as you setCookie
function expect how many days before it expires. Like follows
setCookie('cookiename','cookie_val',20*365);
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