In Node.js, how do I “include” functions from my other files?

Question

Let\'s say I have a file called app.js. Pretty simple:

var express = require(\'express\');
var app = express.createServer();
app.set(\'views\', __dirname + \         


        

Answer 1

Another way to do this in my opinion, is to execute everything in the lib file when you call require() function using (function(/* things here */){})(); doing this will make all these functions global scope, exactly like the eval() solution

src/lib.js

(function () {
    funcOne = function() {
            console.log('mlt funcOne here');
    }

    funcThree = function(firstName) {
            console.log(firstName, 'calls funcThree here');
    }

    name = "Mulatinho";
    myobject = {
            title: 'Node.JS is cool',
            funcFour: function() {
                    return console.log('internal funcFour() called here');
            }
    }
})();

And then in your main code you can call your functions by name like:

main.js

require('./src/lib')
funcOne();
funcThree('Alex');
console.log(name);
console.log(myobject);
console.log(myobject.funcFour());

Will make this output

bash-3.2$ node -v
v7.2.1
bash-3.2$ node main.js 
mlt funcOne here
Alex calls funcThree here
Mulatinho
{ title: 'Node.JS is cool', funcFour: [Function: funcFour] }
internal funcFour() called here
undefined

Pay atention to the undefined when you call my object.funcFour(), it will be the same if you load with eval(). Hope it helps :)