Birth Calculator

HTML

<div class="birth-calc"></div>

CSS

.ac-birthcalc-dates-container{
  padding:20px;
  border-radius:10px;
  background:lightgreen;
}

JavaScript

;(function ( $, window, document, undefined ) {
	
  var pluginName = 'acBirthCalc';
  var defaults = {
    itemClass: 'item',
    itemWidth: 200
  };
	
  // Constructor
  function acBirthCalc(element, options)
  {
		this.element 		= element;
    this.options 		= $.extend({}, defaults, options);
    this._defaults 	= defaults;
    this._name 			= pluginName;
    
    this.init();
  }
  
  acBirthCalc.prototype.init = function()
  {
  	console.log('init');
    
    this.createResultBlock();
    this.createDateSelectors();
    
  };
  
  acBirthCalc.prototype.createDateSelectors = function()
  {
  	console.log('createDateSelectors');
    
    var date = new Date();
    
    this.datesContainer = $('<div />').prependTo(this.element);
    
    $(this.datesContainer).addClass('ac-birthcalc-dates-container');
    
    this.createDaySelector();
    this.createMonthSelector();
    this.createYearSelector();
    this.createCalcButton();
    
  };
  
  acBirthCalc.prototype.createYearSelector = function()
  {
  	console.log('createYearSelector');
  
  	var date = new Date();
    var selYears = $('<select />').appendTo(this.datesContainer);
    $(selYears).addClass('ac-birthcalc-year');
    
    for (var curYear = date.getFullYear(), i = curYear - 1, lastYear = curYear + 50; i < lastYear; i++) {
      
      var option = $('<option />').appendTo(selYears);
      
      option.attr('value', i).text(i);
      
    }
    
  };
  
  acBirthCalc.prototype.createMonthSelector = function()
  {
  	console.log('createMonthSelector');
  
    var arMonthNames = [
    	'Январь',
      'Февраль',
      'Март',
      'Апрель',
      'Май',
      'Июнь',
      'Июль',
      'Август',
      'Сентябрь',
      'Октябрь',
      'Ноябрь',
      'Декабрь'
    ];
    
    var select = $('<select />').appendTo(this.datesContainer);
    
    $(select).addClass('ac-birthcalc-month');
    
    for (var i = 0; i < 12; i++) {
      
      var option = $('<option />').appendTo(select);
      
     ...