访问功能数组中的功能 [英] Access a function within an array of functions

问题描述

创建一个变量，该变量是一个函数，并且在该函数中有一组函数数组，我想访问第三级，但是我不能，给我发送错误，有人认为我做错了吗？

create a variable where is a function and within that function there is a set of array of functions, I want to access the third level but I can not, send me an error, someone has an idea that I am doing wrong?

var mivarobject = function(){

  // array functions
  helpers = {

    // functions
    function1 : function(){
      return 1;
    },
    function2 : function(){
      return 2;
    },

  }

}


console.log(mivarobject.helpers.function1());

这样我得到以下错误：未捕获的TypeError：无法读取未定义的属性'function1'

With this I get the following error: Uncaught TypeError: Cannot read property 'function1' of undefined

推荐答案

假设您打算使用 mivarobject 作为类，则您缺少 new 关键字。

You are missing the new keyword, assuming your intention is to use mivarobject as a class.

此外，您正在全局声明 helpers 。添加 this 将其实例化为 mivarobject 的属性。

Additionally, you're declaring helpers globally. Add this to instantiate it as a property of mivarobject.

var mivarobject = function(){
  this.helpers = {
    function1: function(){
      return 1;
    }
  };
};

console.log((new mivarobject).helpers.function1());

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