Pure vs Impure Functions in JavaScript | Chapter 13 | Part 13 | Functional Programming Basics скачать в хорошем качестве

Pure vs Impure Functions in JavaScript | Chapter 13 | Part 13 | Functional Programming Basics

Welcome to Part 13 of our Complete JavaScript Tutorial Series! 🚀 In this chapter, we learn about Pure and Impure Functions — an important concept for writing clean, predictable, and testable code in JavaScript. Understanding this topic is essential for mastering functional programming and avoiding hidden bugs caused by side effects. 📚 In This Video, You’ll Learn: ✅ What is a Pure Function ✅ Characteristics of pure functions (detinistic & no side effects) ✅ What is an Impure Function ✅ How global variables can make functions impure ✅ Why Math.random(), Date(), and I/O operations create impurity ✅ How to convert impure functions into pure ones ✅ Benefits of pure functions in real-world development 💡 Practical Examples Covered: Pure add() and square() functions Impure counter example using global variables Converting impure array mutation into pure version using spread operator Using map() in a pure way 🔥 Why This Topic Is Important: Makes your code predictable Easier testing and debugging Foundation of functional programming Prevents unexpected side effects Important for large-scale applications 🧠 Practice Exercises Included: ✔ Identify pure vs impure functions ✔ Convert impure functions into pure ✔ Write your own pure & impure examples ✔ Work with arrays in a pure way By the end of this video, you will clearly understand: 👉 What makes a function pure 👉 What causes side effects 👉 How to write safer and cleaner JavaScript functions 🔔 Don’t forget to Like, Share, and Subscribe for the complete JavaScript series from beginner to advanced level.