NODEJS Free Section Starter Challenge 20 min

1. Modern Node.js Architecture, Globals & Process Object

Overview: Understand how V8 executes JS outside the browser and read environment variables from process.env.

Concept & Syntax Guide

Node.js is a cross-platform JavaScript runtime built on Chrome V8 engine. Unlike the browser where window is the top-level object, Node provides global and the process object. The process.env object stores runtime configurations like port numbers and database URIs.

Hands-On Practice Exercise

Configure Server Port from Environment

Read process.env.PORT or default to 3000, and log the server startup message.

Target Output: Server listening on port 3000

Need a hint? Click here to reveal

Hint: Check syntax carefully and make sure your code contains: Server listening on port 3000

NODEJS Code Editor

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// Node.js Environment & Process
const port = process.env.PORT || 3000;
console.log(`Server listening on port ${port}`);