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Node.js Online Compiler - IDE, Editor & Interpreter

Practice Node.js with online Node compiler and interpreter. Run Node.js online inside your browser without downloading any software.

What is Node.js?

Node.js uses Javascript to run the backend on a server. This means that using Javascript you can now also create a backend for your website! Earlier Javascript was only used for Frontend based work, but due to Node.js it has become possible to use Javascript in the backend as well.

It is an open source server environment. It's free and runs on all platforms including Windows, macOS, Linux, Unix, and more. You can use Node.js to collect data, add it into databases, manipulate your database. It can also create, open, read, write, delete and close files on the server. It has the extension '.js'. Since it runs asynchronously, it can handle multiple requests concurrently by moving to the next request.

Top companies using Node.js:

  • Netflix
  • LinkedIn
  • PayPal
  • Nasa
  • eBay
  • Medium
  • Trello

What is a Node.js Compiler?

Node.js uses JavaScript's V8 engine to compile code. This V8 engine is present in every browser like Chrome, Firefox, Brave, Edge, etc. Thus, you can write JavaScript code in a console and it actually works. In the same way Node.js uses the same JavaScript V8 compiler which can run in the browser itself.

It compiles every JavaScript code you have written in your program to small native instructions which are then compiled by the V8 Compiler. The V8 compiler uses a JIT execution model, hence node.js can be compiled as well as interpreted. The V8 Compiler is the fastest compiler right now.

V8 was built by Google and runs on every browser making JavaScript and JavaScript based libraries compile at exceptional speeds which is almost better than other languages out there.

How codedamn compiler is different from others?

Codedamn compiler opens up a docker container in the backend of the website which then uses WebSockets to verify your credentials and then help run the code in the background and display the output to you in the terminal.

In simple terms, it opens a separate linux computer in the background which compiles your Node.js code and checks for any errors or problems in your code and shows the output to you on your computer in the terminal of the codedamn playground.

Node.js Compiler Explained

Most of Node.js is pre-compiled in C++ which means that at the places where JavaScript was less performant, it was replaced with C++ native code. It uses a V8 compiler which is one the fastest compilers for JavaScript and the codedamn Node.js playground works on every browser.

Using CodeDamn's Node.js compiler is very easy, just write your Node.js Code in the index.js file and at the bottom left of the screen press the RunCode button. The output of your code will be present in the Terminal! You can also see the output on the browser which opens up with the index.js file and runs on a localhost. You can replace line number 9:

res.end('Hello from codedamn!') 
// replace it with it: 
res.end('Hello World!')

Press the Run code button and see Hello World! being displayed on the browser on the right-hand side of the screen.

How can you start learning Node.js?

You should check out the Full Stack Learning Path offered by codedamn. It covers Node.js extensively as it is one of the main runtimes you will be using for programming your backends.

It covers the following topics:

  • Introduction to Node.js
  • What exactly is Node.js?
  • Node.js Internals
  • Node.js filesystem
  • Exploring C++ code
  • Threads and Processes
  • Multithreading with Node.js
  • Thread pools and libuv
  • Event loop in JavaScript
  • Understanding Task Queue
  • rAF Queue

Codedamn courses also have a test and practice labs at the end of every module which counts towards the final XP towards your certificates. Hence, checking along the way whether you have understood every concept in depth along with the fundamentals required, to check if you can solve real life problems with a program.

Frequently asked questions

Playground lets you write and edit Node.js code which you can easily run and compile right in the browser. You just need to type your code and click on the Run Code button on the bottom left of the screen and the output of your code will be displayed in the terminal.

Codedamn playground uses Node v14+. Making use of Node v14+, it runs your code and displays the output in a matter of a few seconds.

Codedamn compiler opens up a docker container in the backend of the website which then uses websockets to verify your credentials and then help run the code in the background and display the output to you in the Terminal.

In simple terms, it opens a seperate linux computer in the background which compiles your Node.js code and checks for any errors or problems in your code and shows the output to you on your computer in the terminal of the codedamn playground.

Installing a separate code editor for only one specific language can be a hassle. Compiling your code on codedamn playground is very easy as it opens up another linux computer for you that does all the work in the background without making your own computer lag, and also compiles it faster than any other compiler available anywhere.

The ease of use is another crucial factor that ensures that all your files are in one place and are always safe, due to the auto-save function which saves every line of code you write ensuring that you never lose your work.

Here's a dummy program for you:

console.log("Hello World")
console.log(1+2)
console.log("1" + "2")

Line 1: The first line prints the "Hello World" message by passing it as an argument in the console.log statement.

Line 2: This line prints the addition result of two numbers by passing an operator and operands as an argument in the print statement.

Line 3: The third line prints concatenation of two strings which is done using a plus sign by passing two strings as an argument in the console.log statement.

Write your program and press the Run Code button on the bottom left and the output of your program will be displayed in the terminal.

The demand for MERN and Full-Stack developers has gone throught the roof. The "N" in MERN stands for Node.js and hence it is one of the most important things you can learn if you want to be an employable MERN developer.

			Many top companies are using Node.js for their backend, like Netflix, LinkedIn, PayPal, Nasa, etc. Learning Node.js ensures that you can write and design a backend on your own. Node.js allows you to write and design backends for cross platform applications making you an asset and not a liability while working in a team.