How do I compare two variables containing strings in JavaScript?

Question

I want compare two variables, that are strings, but I am getting an error.

Answer 1

I used below function to compare two strings and It is working good.

function CompareUserId (first, second)
{

   var regex = new RegExp('^' + first+ '$', 'i');
   if (regex.test(second)) 
   {
        return true;
   }
   else 
   {
        return false;
   }
   return false;
}