(function (global, $) {
//不需要每次都使用new
var Greetr = function (firstname, lastname, language) {
return new Greetr.init(firstname, lastname, language)
}
Greetr.prototype = {};
//用new建構子呼叫時, this會指向新建立的空物件
Greetr.init = function (firstname, lastname, language) {
var self = this;
self.firstname = firstname || '';
self.lartname = lastname || '';
self.language = language || 'en';
}
//由Greetr.init所建立的物件應該指向Greetr.prototype作為原型鍊
Greetr.init.prototype = Greetr.prototype;
//IIFE外面的Greetr(別名G$)會指向Greetr
global.Greetr = global.G$ = Greetr;
}(window, jQuery));