SetCookie with Javascript

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I am trying to setCookie on a wordpress page load. Unfortunately nothing is happening when I added the script code below. I’ve been using this code in php setcookie("gmp_", "1", strtotime( '+30 days' ), '/'); with no problems but now I’m trying to get the Javascript version to work. Am I overlooking something? 

<script type="text/javascript">
function setCookie(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+"; path=/";
}
setCookie('gmp_','1',30);    
</script>
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2 comments

  1. Notes the space after ; in split.

    function ReadCookie()
{
   var allcookies = document.cookie;
   alert("All Cookies : " + allcookies );

   // Get all the cookies pairs in an array
   cookiearray  = allcookies.split('; '); //notes the space after ;

   // Now take key value pair out of this array
   for(var i=0; i<cookiearray.length; i++){
       name = cookiearray[i].split('=')[0];
       value = cookiearray[i].split('=')[1];
       alert("Key is : " + name + " and Value is : " + value);
   }
}

  2. Your code is seems to be working fine…. the value of cookie is getting saved in your variable gmp_ with value is equals to 1.

    You can check your saved cookie values by the following JS function..

    function ReadCookie()
{
   var allcookies = document.cookie;
   alert("All Cookies : " + allcookies );

   // Get all the cookies pairs in an array
   cookiearray  = allcookies.split(';');

   // Now take key value pair out of this array
   for(var i=0; i<cookiearray.length; i++){
      name = cookiearray[i].split('=')[0];
      value = cookiearray[i].split('=')[1];
      alert("Key is : " + name + " and Value is : " + value);
   }
}