...

gistfile1.txt

   function validateEmail(email) {
	      return /.+@.+/.test(email);
    }
    
  $("form").on("submit", function(event){
    var inputArray = $(this).find("input");
    var valid = true;
    
    inputArray.each(function(index,input){
        if(input.attr("required") !== undefined && !input.val()){
            return valid = false;
        }
        if (input.attr("type") == "email" && !validateEmail(input.val())) {
            return valid = false;
        }
    });
    
    return valid

  });