How JavaScript Really Works - Execution Context & Call Stack | Intermediate JavaScript Tutorial

JavaScript Execution Context is one of the most important concepts for understanding how JavaScript actually runs. In this video, we break down Execution Context, Thread of Execution, and Stack Memory step by step — and visualize how the JavaScript engine executes real code. In this video, you'll understand: ✅ What is Execution Context in JavaScript ✅ Types of Execution Context (Global & Function) ✅ Phases of Execution Context (Memory Allocation & Execution) ✅ Components of Execution Context (Thread of Execution & Memory) ✅ How the Call Stack works ✅ Step-by-step execution of a real JavaScript code snippet Watch this video if you are: 👉 Intermediate JavaScript developers 👉 React / Node.js developers 👉 Preparing for JavaScript interviews This video builds directly on our previous lesson: How JavaScript Really Works – Runtime Environment & JS Engine 📌 Previous video (Part 1):    • How JavaScript Really Works - Runtime Envi...   📌 Next video: We’ll understand how Async JavaScript runs and What is Event Loop. Follow us on socials: Website: https://hasab.tech/ LinkedIn:   / hasabtech   Instagram:   / hasab.tech   Facebook:   / hasabtech   Tiktok:   / hasabtech   X: https://x.com/hasabTech #javascript #learnjavascript #javascripttutorial #hasabtech #webdevelopment #2026