Variables, Data Types & Operators – JavaScript Tutorial for Beginners | Web Dev Series | JDCodebase

Welcome to JDCodebase!
This Web Development Series covers HTML, CSS, JavaScript, and the MERN Stack in a complete beginner-friendly way. Every video explains concepts step by step with clear examples and practical demos, so you can confidently build real-world websites from scratch.

In this tutorial, you will learn one of the most important foundations of JavaScript — Variables, Data Types, and Operators. These concepts are used in almost every JavaScript program, so understanding them clearly is extremely important for beginners.

Many beginners feel confused about when to use var, let, or const, what data types JavaScript has, how operators work, and why === behaves differently from ==. In this video, all these concepts are explained slowly, clearly, and from absolute basics, assuming no prior JavaScript knowledge.

You will learn how to store data using variables, understand primitive data types, use the typeof operator, and work with arithmetic, comparison, and logical operators. Everything is demonstrated with simple explanations and live coding examples in VS Code, so you not only understand the theory but also see how it works in real code.

By the end of this video, you will have a strong JavaScript foundation, making it easy to move forward into logic building, conditions, loops, and real projects in the upcoming videos.

📌 What This Video Covers
What variables are in JavaScript
Difference between var, let, and const
Scope and reassignment explained simply
JavaScript primitive data types
Number, string, boolean, undefined, and null
Using the typeof operator
Arithmetic operators (+ - * / %)
Comparison operators (== vs ===)
Logical operators (&& || !)
Expressions vs statements
JavaScript best practices for beginners
Live coding examples using VS Code

📚 Resources
PPT Slides:
👉 https://1drv.ms/p/c/d9a1d5f2dacf7aea/...

Source Code:
👉 https://github.com/jdcodebase/web-dev...

Complete Web Development Playlist:
👉    • Web Development Series – HTML to MERN Full...  

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