javascript - 尝试在JS中创建私有(private)函数

Question

我是 javascript 新手..我正在尝试在 JS 中创建一个私有(private)函数并在外部访问它..这是我的代码

 function Person(name, gender) {
   this.name = name;
   this.gender = gender;

   //the private function
   function aFunction(arg1) {
     alert("anything");
   }

 }

 var person = new Person("bob", "M");


 person._privates['aFunction']();

Answer 1

I am trying to make a private function in JS and access it outside

首先，这条语句是oxymoron ，因为根据定义，私有(private)函数对于作用域来说是私有(private)的，因此不应该在外部访问。

如果您的意思是您想要访问在 Person 内部定义的方法，那么 -> 尝试使您的 Person 类具有_privates 成员为

function Person(name, gender){
   this.name = name;
   this.gender = gender;

   this._privates = {}; //new property added to access private functions

   //the private function       
   this._privates.aFunction = function (arg1){
       alert("anything");
   };
}