My regex javascript validation doesn't seem to be working

I'm trying to validate a textbox to see if it contains numbers and special characters, but for some reason, my code doesn't seem to work:

<script> function validation(){ var firstname = $("#Fname").val(); if(firstname.match(/^[A-Za-z]*/)){ return true; } else{ alert("Invalid name!"); return false; } }; </script> 

And here is where I called the function:

<form method="POST" action="confirmReservation.php" onSubmit="return validation()" name ="frm"> <div class="col-md-2 form-group"> <br><input type="text" id = "Fname" name="Fname" class="form-control" placeholder="First Name" required> </div> </form> 

What might be the problem in my code?