blocks|key|981544|text|我相信没有一种方法可以让cookie永远存在，但您只需要将其设置为在遥远的将来过期，例如2100年。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|981545|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I believe that there isn't a way to make a cookie last forever, but you just need to set it to expire far into the future, such as the year 2100.

blocks|key|1196040|text|您不能，但如果您设置过期时间现在%2B+100年？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1196041|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

You can't but what if you set expire time to now + 100 years ?

blocks|key|1196110|text|你不应该这样做，这是不可能的，如果你想，你可以设置一个更大的值，比如提前10年。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1196111|顺便说一下，我从来没有见过有这样要求的cookie+:)|1196112|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

You shouldn't do that and that's not possible anyway, If you want you can set a greater value such as 10 years ahead.

By the way, I have never seen a cookie with such requirement :)

blocks|key|1196197|text|虽然这并不完全可能，但你可以做一些类似谷歌做的事情，并将你的cookie设置为2038年1月17日到期或其他同样遥远的事情。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1196198|在所有实际操作中，您最好将cookie设置为10年或60*60*24*365*10，这应该比您的cookie使用的大多数机器都要长。|1196199|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

While that isn't exactly possible you could do something similar to what Google does and set your cookie to expire Jan 17, 2038 or something equally far off. 

In all practicality you might be better off setting your cookie for 10 years or 60*60*24*365*10, which should outlive most of the machines your cookie will live on.

blocks|key|981792|text|我不确定，但是cookies不会在浏览器关闭时被删除吗？不知何故，我做了一个永不过期的cookie，chrome将过期日期识别为“在浏览器关闭时”。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|981793|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I'm not sure but aren't cookies deleted at browser close? I somehow did a never expiring cookie and chrome recognized expired date as "at browser close" ...

blocks|key|1196341|text|我的特权阻止我在第一篇文章中发表评论，所以它必须放在这里。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1196342|在从当前日期提前20年设置时，应考虑2038+unix+bug，这是上面建议的正确答案。|offset|length|1196343|您2018年1月19日%2B+(20年)的cookie很可能会遇到2038年的问题，这取决于您最终运行的浏览器和/或版本。|1196344|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/Year_2038_problem^0|0|I|D|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

My privilege prevents me making my comment on the first post so it will have to go here.

Consideration should be taken into account of <a href="http://en.wikipedia.org/wiki/Year_2038_problem" rel="noreferrer">2038 unix bug</a> when setting 20 years in advance from the current date which is suggest as the correct answer above.

Your cookie on January 19, 2018 + (20 years) could well hit 2038 problem depending on the browser and or versions you end up running on.

blocks|key|1196387|text|你不能说一个永无止境的循环，cookie以当前日期%2B1的形式过期，所以它永远不会到达它应该过期的日期，因为它总是在明天？有点夸大其词，但只是说说而已。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1196388|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Can't you just say a never ending loop, cookie expires as current date + 1 so it never hits the date it's supposed to expire on because it's always tomorrow? A bit overkill but just saying.

blocks|key|981895|text|如果您希望至少在浏览器缓存完全清空之前永久-or客户端计算机上的数据，请使用Javascript本地存储：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|981896|https://developer.mozilla.org/en-US/docs/DOM/Storage#localStorage|offset|length|981897|不要使用会话存储，因为它将被清除，就像cookie的最大寿命为零一样。|981898|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1T|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@$D|Q|E|R|1|S]]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|C]]]]

If you want to persist data on the client machine permanently -or at least until browser cache is emptied completely, use Javascript local storage:

<a href="https://developer.mozilla.org/en-US/docs/DOM/Storage#localStorage" rel="nofollow">https://developer.mozilla.org/en-US/docs/DOM/Storage#localStorage</a>

Do not use session storage, as it will be cleared just like a cookie with a maximum age of Zero.

blocks|key|1196428|text|您可以设置离日期较远的日期，cookie的创建方式如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1196429|var+Cookie_expiry+=+new+Date();
Cookie_expiry.setDate(Cookie_expiry.getDate()%2B10e5);+++
//+expiry+date+of+cookie+is+set+to+be+practically+infinite+(~+4000+years)
setCookie('token',+'token_value',+{expires:+Cookie_expiry});|code-block|syntax|javascript|1196430|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can set a far date from the date, the cookie is created like this:
<pre><code>var Cookie_expiry = new Date();
Cookie_expiry.setDate(Cookie_expiry.getDate()+10e5); 
// expiry date of cookie is set to be practically infinite (~ 4000 years)
setCookie('token', 'token_value', {expires: Cookie_expiry});
</code></pre>

Looking at the <a href="http://php.net/manual/en/function.setcookie.php" rel="noreferrer">php documentation on setting a cookie</a> I see that I can set an expiration date for the cookie. You can set the cookie to expire at the end of the browser session or at some time in the future but I do not see a way to set the cookie to never expire. Is this even possible and how is this accomplished?

Set a cookie to never expire

查看，我可以设置cookie的过期日期。您可以将cookie设置为在浏览器会话结束时或将来某个时间过期，但我没有看到将cookie设置为永不过期的方法。这是可能的吗?这是如何实现的？

问将cookie设置为永不过期
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