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NodeJS Exporting and Importing Module

Exporting with ES6 syntax


This is the equivalent of the other example but using ES6 instead.

export function printHelloWorld() {
 console.log("Hello World!!!");
}

Using a simple module in node.js


What is a node.js module :

A module encapsulates related code into a single unit of code. When creating a module, this can be interpreted as moving all related functions into a file.

Now lets see an example. Imagine all files are in same directory:

File: printer.js
"use strict";
exports.printHelloWorld = function (){
 console.log("Hello World!!!");
}

Another way of using modules:

File animals.js
"use strict";
module.exports = {
 lion: function() {
 console.log("ROAARR!!!");
 }
};

File: app.js

Run this file by going to your directory and typing: node app.js

"use strict";
//require('./path/to/module.js') node which module to load
var printer = require('./printer');
var animals = require('./animals');
printer.printHelloWorld(); //prints "Hello World!!!"
animals.lion(); //prints "ROAARR!!!"


Conclusion

In this page (written and validated by ) you learned about NodeJS Exporting and Importing Module . What's Next? If you are interested in completing NodeJS tutorial, your next topic will be learning about: NodeJS How modules are loaded.



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