How JavaScript Code Executes 🔥 Execution Context & Call Stack Explained | JS for Interviews #1

Welcome to Episode 1 of the “JavaScript for Interviews” series on Skills Buffet!
In this video, we break down one of the most fundamental and most asked interview concepts:

✔ How does JavaScript code actually run?
✔ What is an Execution Context?
✔ What happens in Memory Creation Phase and Code Execution Phase?
✔ What is the Call Stack and how does it manage function calls?
✔ Why is JavaScript called single-threaded and synchronous?

If you’re preparing for Frontend Interviews, JavaScript Developer roles, or revising JS fundamentals — this video will build a rock-solid foundation.
This topic is the key to understanding hoisting, closures, promises, async/await, event loop, and more.


---

🔍 What you’ll learn in this video:

How a JS file starts running inside a Global Execution Context (GEC)

How variables and functions are stored in the memory phase

Why functions create their own Function Execution Context (FEC)

How JavaScript manages everything using the Call Stack

A step-by-step example breaking down execution flow

Real interview-style explanation for beginners & experienced devs



---

📚 Full JavaScript Interview Playlist (30 Episodes Coming Soon!)

This is EPISODE 1 of the series.
Upcoming videos include:
Hoisting, Scope, Closures, Currying, Promises, Event Loop, Map/Filter/Reduce, Polyfills, Debounce/Throttle, Prototypes, Classes & more.

Subscribe so you don’t miss the next episode!
👉 Subscribe to Skills Buffet
👉 Like + Comment if this helped
👉 Share with a friend preparing for interviews