js匿名函数封装

(function(root,factory){
    typeof exports === ‘object‘ && typeof module !== ‘undefined‘ ? module.exports = factory() :
    typeof define === ‘function‘ && define.amd ? define(factory) :
    (root.Demo = factory());
})(this,function(){
    function Demo(option){
        this._init(option)
    }
    Demo.prototype = {
        constructors: Demo,
        _init:function(option){
            this.name = option.name;
            this.age = option.age;
        }
    }
    return Demo;
});