Create / Read / Erase Cookie using Javascript

These are the three javascript function.

1.     createCookie: Using this function you can create cookie 

2.     readCookie: This function is used to read cookie. 

3.     eraseCookie: Use this function to erase any existing cookie.
   

   
   
   <style type="text/css">
   function createCookie(name, value, days) {
       var expires;
   
       if (days) {
           var date = new Date();
           date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
           expires = "; expires=" + date.toGMTString();
       } else {
           expires = "";
       }
       document.cookie = escape(name) + "=" + escape(value) + expires + "; path=/";
   }
   
   function readCookie(name) {
       var nameEQ = escape(name) + "=";
       var ca = document.cookie.split(';');
       for (var i = 0; i < ca.length; i++) {
           var c = ca[i];
           while (c.charAt(0) === ' ') c = c.substring(1, c.length);
           if (c.indexOf(nameEQ) === 0) return unescape(c.substring(nameEQ.length, c.length));
       }
       return null;
   }
   
   function eraseCookie(name) {
       createCookie(name, "", -1);
   }
   </script>

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