为什么我无法使用JavaScript过期Cookie（不是HttpOnly） [英] Why can't I expire a cookie with JavaScript (not HttpOnly)

问题描述

我在我通过JavaScript开发的框架中设置了一个cookie（该框架似乎使用 https://github.com/carhartl/jquery-cookie ）。我在这个框架内开发，但没有访问框架代码，我想通过JavaScript删除一个cookie（我没有访问任何服务器在这个框架内）。

通过Chrome检查Cookie，我可以说明很多：

 domain：www。 example.com，
expirationDate：1667235180，
hostOnly：true，
httpOnly：false，
name：my_cookie，
path：/，
secure：false，
session：false，
storeId：0 123456789
  

这是hostOnly，但应该很好，因为我想从同一个域中删除

 >  function clearCookie（name，domain，path）{
 var domain = domain || document.domain; 
 var path = path || /; 
 document.cookie = name +=; expires =+ + new Date +; domain =+ domain +; path =+ path; 
}; 
 
 clearCookie（'my_cookie'，'www.example.com'，'/'）; 
  

但是，当我这样做时，会创建一个新的会话Cookie，其域名为.www.example .com（注意额外的时间段），并且不会删除当前的Cookie。

我缺少什么？

解决方案

与您如何设置到期。使用JavaScript设置Cookie需要UTC / GMT格式的日期。请参阅相关答案：

在设置Cookie时指定到期日期时，我可以使用哪些日期格式？

I've got a cookie being set in a framework I'm developing within via JavaScript (the framework appears to be using https://github.com/carhartl/jquery-cookie). I'm developing within this framework but don't have access to the framework code and I want to delete a cookie via JavaScript (I do not have access to anything serverside within this framework).

Inspecting the cookie via Chrome, I can tell a lot about it:

"domain": "www.example.com", 
"expirationDate": 1667235180, 
"hostOnly": true, 
"httpOnly": false, 
"name": "my_cookie", 
"path": "/", 
"secure": false, 
"session": false, 
"storeId": "0", 
"value": "123456789"

It is hostOnly, but that should be fine as I am trying to remove from the same domain set in the domain field.

I'm trying to remove it using the following code:

function clearCookie(name, domain, path) {
      var domain = domain || document.domain;
      var path = path || "/";
      document.cookie = name + "=; expires=" + +new Date + "; domain=" + domain + "; path=" + path;
};

clearCookie('my_cookie', 'www.example.com', '/');

When I do this however, it creates a new session cookie with a domain of ".www.example.com" (note the extra period) and doesn't delete the current cookie.

What am I missing?

解决方案

I think there's a problem with how you're setting the expiration. Setting cookies with JavaScript requires a UTC/GMT format for the date. See this related answer:

Which date formats can I use when specifying the expiry date when setting a cookie?

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