module.exports ={

 //functions

}

function foo() {}

function bar() {}

​

// To export above functions:

module.exports = foo;

module.exports = bar;

​

// And in the file you want to use these functions,

// import them like this:

const foo = require('./module/path');

const bar = require('./module/path');

​

​

function foo(x, y) {

  return x + y;

}

​

function bar(x, y) {

  return x - y;

}

​

//You can also export numbers, classes, objects, etc

const foobar = 33;

​

module.exports = { foo, bar, num };

var users = [

    { userName: "BarneyRubble", age: 38   },

    { userName: "WilmaFlintstone", age: 37 },

    { userName: "FredFlintstone", age: 36 }

];

​

module.exports.getAllUsers = function(){

    return users;

}

module.exports.yourFunctionName = function()

{

​

}

module.exports = {

    method: function() {},

    otherMethod: function() {},

};

​

​

const myModule = require('./myModule.js');

const method = myModule.method;

const otherMethod = myModule.otherMethod;

// OR:

const {method, otherMethod} = require('./myModule.js');

mycoolmodule/index.js

module.exports = "123";

​

​

routes/index.js

​

​

var mymodule = require('mycoolmodule')

​

var router = express.Router();

​

/* GET home page. */

router.get('/', function(req, res, next) {

    console.log(mymodule);

});

/*will show 123 in the terminal*/

module.exports = router;

​

​

//2 ways of module.exports

// 1

function celsiusToFahrenheit(celsius) {

  return celsius * (9/5) + 32;

}

module.exports.celsiusToFahrenheit = celsiusToFahrenheit;

//2

module.exports.fahrenheitToCelsius = function(fahrenheit) {

  return (fahrenheit - 32) * (5/9);

};

 module.exports.name = value;  // to export something 

 require( path_to_module ).name;  // to import something 

​

module.exports = mongoose.model("user", UserScheme);

​