Primitive data types in JavaScript | String, Number, Boolean & typeof
In this JavaScript tutorial, we explore the 5 Primitive Data Types and how Dynamic Typing works in VS Code. Unlike other languages, JavaScript determines the type based on the value. We will look at how to use the typeof operator to identify variables and explain the tricky difference between null and undefined.
There are some pre-requisites, it requires visual studio code & node.js in order to run javascript. Also it will be good if code runner extension also installed in vs code.
Key Concepts Covered:
Number: Handles integers and decimals.
String: Text inside quotes.
Boolean: Logical true/false.
Null: Intentional absence of value (Object type).
Undefined: Variable declared but not assign
Video Chapters:
00:00 Introduction to Primitive Data Types
00:20 What is Dynamic Typing?
00:54 The 5 Main Data Types
01:34 How to use the 'typeof' operator
02:24 Number & Floating Points
02:53 Working with Strings
03:27 Boolean Values (True/False)
04:15 Null vs. Undefined (Important!)
Please watch below video for node js installation
• Install Node.js 20 LTS on Windows 11 in 3 ...
Please watch below video to use javascript in vscode
• Run JavaScript in VS Code | Code Runner Ex...
Subscribe for more JavaScript & QA Automation tutorials: / @qathoughts
#javascriptDataTypes #PrimitiveDataTypes #qathoughts