参考http://www.feeldesignstudio.com/2013/09/javascript-module-pattern-basics

立即执行函数（IIFE Immediately-Invoked Function Expressions）

var name1 = function (){ console.log('name1') }();(function name2(){console.log('name2');})();

立即执行函数可以不暴漏私有变量

var myObject = (function(){var name = "FeeldesignStudio";return {getName : function(){return name;}}})();console.log(myObject.name);//undefinedconsole.log(myObject.getName());

 

让立即执行函数使用全局的变量和方法

var myHello=(function(o){function sayHello(){console.log('hello'+o.getName());}return {sayHi:sayHello}})(myObject);myHello.sayHi();