如何从module.exports访问函数

Question

I have the following code in test1.js .

module.exports = function(d){
  d.demo1 = function() {
    return "DEMO 1";
  },

  d.demo2 = function() {
    return "DEMO 2";
  }
}

I am trying to access function demo1 on test2.js . Below the code which call the function.

var demo = require('./test1');
var result = demo.****;        //code to call function demo1
console.log("calling function", result); //output should be "calling function DEMO 1"

Please help how can I access this function. Thanks.

Answer 1

It is very unclear what you're trying to achieve here.

You're exporting a function . That function will take 1 argument ( d ). Then you try to assign the demo1 and demo2 properties, of that received argument, to two different functions.

What I think you want to do is that you want to export an object with two different properties for those functions. Eg doing this:

module.exports = {
  demo1: function() {
    return "DEMO 1";
  },

  demo2: function() {
    return "DEMO 2";
  }
}

Then you can import the module and access the demo1 and demo2 functions as:

var demo = require('./test1');
var result = demo.demo1();

Answer 2

var demo = require('./test1');
var o = {};
demo(o);
o.demo1(); // "DEMO 1";