JavaScript Scope Explained 🔥 | Scope Chaining, Variable Lookup & Lexical Scope

JavaScript Scope, Scope Chaining, Variable Lookup & Lexical Scope | Deep Explanation 🧠🔥 In this class, we studied one of the MOST important foundations of JavaScript — Scope and how JavaScript decides where a variable is accessible. Understanding scope makes your code predictable, bug-free, and is essential for mastering functions, closures, and advanced JavaScript. 🔥 Topics Covered in This Video 1️⃣ What is Scope? 2️⃣ Lexical Scope (MOST IMPORTANT) 3️⃣ Variable Lookup (How JS Searches for Variables) 4️⃣ Scope Chaining 5️⃣ Common Mistakes & Real Examples 🎯 After Watching This Class, Students Will Understand: ✔ What scope actually means in JavaScript ✔ How lexical scope forms based on code placement ✔ How variable lookup works behind the scenes ✔ How the scope chain is created ✔ Why inner functions can access outer variables ✔ How scoping affects functions, loops, blocks & real applications