JavaScript Functions in Hindi | Arrow Functions, Callbacks & IIFE Explained

🚀 JavaScript Functions Explained in Hindi – From Basics to Callbacks
In this video, you’ll learn JavaScript Functions step by step — starting from basic functions, parameters & arguments, to modern arrow functions, IIFE, and callbacks.
We’ll understand why functions exist, how reusability works, rest vs spread, and real-world callback use cases like order & payment flow — explained in simple Hindi with logical examples.
This lecture builds a strong foundation for closures, async JavaScript, and advanced concepts.

📌 Topics Covered in This Video:

⚙️ Function Basics
✅ Introduction
✅ Basic Functions
✅ Calling Functions
✅ Function Reusability
✅ Parameters & Arguments
✅ Default Parameter Values
📦 Advanced Parameters
✅ Rest Operator (...)
✅ Sum using Rest Operator & Loop
✅ Spread vs Rest (Clear Difference)
🧾 Function Types
✅ Function Declaration vs Function Expression
➡️ Arrow Functions
✅ Introduction to Arrow Functions
✅ Arrow Function Implicit Return
✅ Arrow Function with Single Parameter
✅ Returning Objects from Arrow Functions
✅ Calling Arrow Functions
⚡ IIFE (Immediately Invoked Functions)
✅ IIFE Explained
✅ Arrow Function IIFE
🔁 Callbacks in JavaScript
✅ What are Callbacks?
✅ Callback Use Case
✅ Callback Example: Order & Payment Flow
✅ Why Callbacks Matter in JavaScript
📚 Conclusion
✅ Conclusion & Homework (Closures Introduction)

🎯 Who Should Watch This Video?

✔ JavaScript Beginners
✔ Students learning Programming Logic
✔ Frontend / Full-Stack Learners
✔ Anyone confused about Functions & Callbacks

🧰 Tools & Technologies Used:

• JavaScript (ES6+)
• VS Code
• Browser Console
• Node.js

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