1. Command Line Interface (CLI): 🤓

👉If you are writing a program via command line(Black background with text) then it is a CLI(Command Line Interface)

👉 User talk to program via command line is basically CLI

2. Universal rule: 🤓

👉Programming is nothing but input>> processing>> output .

👉Meaning is every program is divided into three parts.

👉Input

👉Processing

👉Output

3. How to get output or print in node.js ? 🤓

console.log("Hello world");

Output 👇

Hello world

4. What is a String: 🤓

Basically,there are total seven primitive data type:

• String
• Number
• Bigint
• Boolean