jQuery check if Cookie exists if not create it

Question

I cannot get this code to work I must be missing something pretty simple   I am trying to check to see if a Cookie exists  if it does  do nothing  if it doesn t  create it    I am testing the cookie by including an alert on a page   Basically I do not want the cookie to keep re-creating with a referral url  I am trying to grab only the FIRST referred URL     document  ready function         if    cookie  bas referral      null       var ref   document referrer toLowerCase            set cookie      var cookURL      cookie  bas referral   ref    expires  1                    Displaying the current cookie contents          get cookie       alert   cookie  bas referral               delete cookie          cookie  bas referral   null

User · Answer

I was having alot of trouble with this because I was using:

if($.cookie('token') === null || $.cookie('token') === "")
{
      //no cookie
}
else
{
     //have cookie
}

The above was ALWAYS returning false, no matter what I did in terms of setting the cookie or not. From my tests it seems that the object is therefore undefined before it's set so adding the following to my code fixed it.

if($.cookie('token') === null || $.cookie('token') === "" 
    || $.(cookie('token') === "null" || $.cookie('token') === undefined)
{
      //no cookie
}
else
{
     //have cookie
}

User · Answer

Try this very simple               var cookieExist     cookie  status                if cookieExist     null                     alert  Cookie Is Null

User · Answer

I think the bulletproof way is   if  typeof   cookie  token        undefined       no cookie   else      have cookie     Checking the type of a null  empty or undefined var always returns  undefined   Edit   You can get there even easier   if      cookie  token          have cookie   else       no cookie        will turn the falsy values to false  Bear in mind that this will turn 0 to false

User · Answer

You can set the cookie after having checked if it exists with a value        document  ready function                      if    cookie  cookie        if cookie isset            do stuff here like hide a popup when cookie isset            document getElementById  hideElement   style display    none          else           var CookieSet     cookie  cookie    value      set cookie

User · Answer

document  ready function           var CookieSet     cookie  cookietitle    yourvalue          if  CookieSet    null                 Do Nothing             if  jQuery cookie  cookietitle                   Reactions

[jquery] jQuery check if Cookie exists, if not create it

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