Cannot set cookies in Javascript

Cannot set cookies in Javascript

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I have a very simple line of code that set and read a cookie. I kept getting empty value for my cookie and have no understanding why. I have cookie enabled and know that cookies work on the browser.

<HTML>
    <HEAD>
        <TITLE>Hello World</TITLE>
    </HEAD>
    <BODY>
        <SCRIPT type="text/javascript">
            document.cookie = "ding=dong";
        </SCRIPT>
        <script type="text/javascript">
            alert(document.cookie);
        </script>
    </BODY>
</HTML>

Recently I stumbled upon a similar issue. My script couldn't store a cookie in Chromium, although it worked well on all other major browsers. After some googling it turned out that Chrome ignores cookies from local pages. After I uploaded the page to remote server code magically started to work.

Trying to set a cookie in Chrome! - JavaScript, , you need to read it in order to use it. Javascript Set Cookie. You can create cookies using document. cookie property like this. document.cookie = "cookiename=cookievalue" You can even add expiry date to your cookie so that the particular cookie will be removed from the computer on the specified date. The expiry date should be set in the UTC/GMT format.


Chrome denies file cookies. To make your program work, you going to have to try it in a different browser or upload it to a remote server. Plus, the code for your setcookie and getcookie is essentially wrong. Try using this to set your cookie:

function setCookie(name,value,expires){
   document.cookie = name + "=" + value + ((expires==null) ? "" : ";expires=" + expires.toGMTString())
}

example of usage:

var expirydate=new Date();
expirydate.setTime( expirydate.getTime()+(100*60*60*24*100) )
setCookie('cookiename','cookiedata',expirydate)
// expirydate being a variable with the expiry date in it
// the one i have set for your convenience expires in 10 days

and this to get your cookie:

function getCookie(name) {
   var cookieName = name + "="
   var docCookie = document.cookie
   var cookieStart
   var end

   if (docCookie.length>0) {
      cookieStart = docCookie.indexOf(cookieName)
      if (cookieStart != -1) {
         cookieStart = cookieStart + cookieName.length
         end = docCookie.indexOf(";",cookieStart)
         if (end == -1) {
            end = docCookie.length
         }
         return unescape(docCookie.substring(cookieStart,end))
      }
   }
   return false
}

example of usage:

getCookie('cookiename');

Hope this helps.

Cheers, CoolSmoothie

Cookies, document.cookie, A simple cookie setting example script works in IE & Firefox but not in Chrome. <​;a href="javascript: setcookie();">Set Cookie</a><  httponly is a flag you can set on cookies meaning they can not be accessed by JavaScript. This is to prevent malicious scripts stealing cookies with sensitive data or even entire sessions. This is to prevent malicious scripts stealing cookies with sensitive data or even entire sessions.


I tried to save an cookie on Chrome and had the same error, that it would save. Although it did work in Firefox, so I asked an collegue and he suggested that I take away path and domain (I had name of cookie, value, expire, path amd domain) and all of a sudden it worked. So just to get the cookie to actually save in Chrome, you just need name, value and expire.

Hope it helps.

Example:

function createCookie(name,value,days) {
     if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
     }
     else var expires = "";
     document.cookie = name+"="+value+expires+";";
}

Not setting cookie in Chrome · Issue #299 · js-cookie/js-cookie · GitHub, linkId); Cookies.set(cookieName, linkId); var newLinkId = Cookies.ge I can't very well say that the site does not work in Chrome of course,  I'm trying to set a cookie depending on which CSS file I choose in my HTML. I have a form with a list of options, and different CSS files as values. When I choose a file, it should be saved to a cookie for about a week. The next time you open your HTML file, it should be the previous file you've chosen.


With chrome, you cannot create cookies on a local website, so you need to trick your browser into thinking this site is not local by doing the following:

1) Place the root directory of the web site into C:\inetpub\wwwroot, (so it looks like C:\inetpub\wwwroot\yourProjectFolder)

2) Get your computer name by right clicking Computer, clicking properties, and looking for Computer Name

3) Access your site in the browser by visiting http://my-computer-name/yourProjectFolder/index.html, at which point creating cookies should work.

(notice that I use dashes in the computer name, NOT underscores)

javascript, Why can't I set a cookie? Home · Programming Forum · Web Development Forum​  With chrome, you cannot create cookies on a local website, so you need to trick your browser into thinking this site is not local by doing the following: 1) Place the root directory of the web site into C:\inetpub\wwwroot, (so it looks like C:\inetpub\wwwroot\yourProjectFolder)


I get the same weird behavior when opening a page in Chrome from localhost

When I map the same page in my hosts file and open the same page through the mapped name, normal cookie functionality resumes.

  1. Open you hosts file as admin. (usually c:\windows\system32\drivers\etc\hosts)
  2. Add 127.0.0.1 localhostdevelopment.com or similar to the end of your hosts file
  3. Save your hosts file (will be rejected if you did not open the file as admin)
  4. Go to http://localhostdevelopment.com/ (or whatever you called it) in Chrome.
  5. Please enjoy having your cookies behave normally.

Explaining document.cookie and the Set-Cookie header, Does that mean that before we could not save data on the client side? An HTTP request might respond with a Set-Cookie header. with HttpOnly will not be accessible through JavaScript and the document.cookie property. Cookies, document.cookie. Cookies are small strings of data that are stored directly in the browser. They are a part of HTTP protocol, defined by RFC 6265 specification. Cookies are usually set by a web-server using response Set-Cookie HTTP-header.


Document.cookie, Note that you can only set/update a single cookie at a time using this Note: The domain must match the domain of the JavaScript origin. By default, cookies are available only to the pages in the domain they were set in. If a cookie created by a page on blog.example.com sets its path attribute to / and its domain attribute to example.com, that cookie is also available to all web pages on backend.example.com, portal.example.com. However, you cannot share cookies outside of a domain.


cookies.set(), This is an asynchronous function that returns a Promise . Syntax. var setting = browser.cookies.set( details // object ). Parameters. details: An  Cookies. Cookies were originally invented by Netscape to give 'memory' to web servers and browsers. The HTTP protocol, which arranges for the transfer of web pages to your browser and browser requests for pages to servers, is state-less, which means that once the server has sent a page to a browser requesting it,


Set and Get Cookies in JavaScript, A cookie value cannot contain semicolons, commas, or spaces. For this reason, you will need to use the JavaScript's built-in function encodeURIComponent() to​  Contrary to earlier specifications, leading dots in domain names are ignored, but browsers may decline to set the cookie containing such dots. If a domain is specified, subdomains are always included. Note: The domain must match the domain of the JavaScript origin. Setting cookies to foreign domains will be silently ignored.