This is my coding method using jQuery javascript

gistfile1.js

(function($) {
  var elements,

  bind = {
    buttonClick: function() {
      elements.$button.click(e) { e.preventDefault();
        action.sayHello('World');
      }
    }
  },

  action = {
    sayHello: function(to) {
      console.log('Hello ' + to + ' !')
    }
  };

  $(function() {
    elements = {
      $button: $('a.button')
    };
    
    bind.buttonClick();
  });
})(jQuery);