Question

I have a module.js that must be loaded; In order to work needs objectX;

How do I pass the objectX to the module.js in the require method provided by node.js?

thanks

// my module.js
objectX.add('abc');
// error: objectX is undefined

I would like a way to do it, without having to change all my classes because would take a lot of time… and they way it is has good performance for the client side. (I mix clientfiles with serverfiles***)

Answer 1

The module that you write can export a single function. When you require the module, call the function with your initialization argument. That function can return an Object (hash) which you place into your variable in the require-ing module. In other words:

main.js

var initValue = 0;
var a = require('./arithmetic')(initValue);
// It has functions
console.log(a);
// Call them
console.log(a.addOne());
console.log(a.subtractOne());

arithmetic.js:

module.exports = function(initValue) {
  return {
    addOne: function() {
      return initValue + 1;
    },
    subtractOne: function() {
      return initValue - 1;
    },
  }
}