Check if cookie exist in general, not a specific cookie

Question

How would I detect if the website has set a cookie in general without checking lots of individual cookies.

I looked at this similar question: Create a cookie if (and only if) it doesn't already exist. But the solutions provided there check if a specific cookie exist, not just cookies in general.

I have tried:

if($.cookie) {  
 //code   
}

Wild guess but have you tried `$.cookie().length` ? – Johan Jun 08 '12 at 11:49 — Johan, Jun 08 '12 at 11:49

score 2 · Accepted Answer · answered Jun 08 '12 at 11:51

2

jQuery really isn't necessary to check if the current domain has set a cookie in the user's browser, just use raw JS:

if(document.cookie.length > 0) {
    // do stuff ...
}

answered Jun 08 '12 at 11:51

Alex

Edditoria · Answer 2 · 2012-06-08T12:33:13.433

2

check if cookie exists:

if (document.cookie === "") {
  // do something if no cookie exists
}

I would not use jquery for this to safe memory/processing

edited Jun 08 '12 at 12:33

answered Jun 08 '12 at 12:01

Edditoria

document.cookie will always be a string, and `"" != null` – Niko Jun 08 '12 at 12:06
wouldn't `!= null` interpret as `if document.cookie is not equal to null` which therefore means if cookie exist. so shouldnt it be `==` – RSM Jun 08 '12 at 12:06

score 1 · Answer 3 · answered Jun 08 '12 at 11:52

1

You don't need to use the $.cookie plugin for this:

if (document.cookie) {
    // at least one cookie has been set...
}

answered Jun 08 '12 at 11:52

Niko

3 Answers3