gistfile1.js

// Before and after refactoring

//
// Before
//

function showMessage(result)
{
if (result == Success ) {
             $('#Success').show(); 
             ToggleApplyRemoveButtons();
        }
        else if (result == Invalid ) {
             $('#Invalid').show();
        }
        else if (result == Expired) {
            $('#Expired').show();
        }
        else if (result == Used) {
            $('#Used').show();
        }
        else if (result == NotEligible) {
            $('#NotEligible').show();
        }
        else if (result = Error) {
            $('#Error').show();
        }        
};


//
// After
//
var statusCodes = {};
$(document).ready(function() {
  statusCodes[Invalid] = function() { $('#Invalid').show(); },
  statusCodes[Expired] = function() { $('#Expired').show(); },
  statusCodes[Used] = function() { $('#Used').show(); },
  statusCodes[NotEligible] = function() { $('#NotEligible').show(); },
  statusCodes[Error] = function() { $('#Error').show(); },
  statusCodes[Success] = function() { $('#Success').show();ToggleApplyRemoveButtons(); }
});

function showMessage(result) {
   statusCodes[result]();
}