What is the event loop in JavaScript, and how does it work?
🔁 *Master the JavaScript Event Loop* – Understand Asynchronous Code Like Never Before!
Ever wondered how JavaScript handles multiple tasks at once without multithreading? In this deep dive, you’ll learn exactly how the *JavaScript Event Loop* works, including real-world examples of `setTimeout()`, `Promises`, `async/await`, and more.
📌 *In This Video:*
What is the Event Loop?
How JavaScript runs async code
The Call Stack, Web APIs, Callback Queue & Microtask Queue
How `setTimeout()`, `fetch()`, and Promises interact with the Event Loop
Real code examples that make these concepts finally click
🎯 *Who this video is for:*
Whether you’re a beginner learning asynchronous JavaScript, or an experienced dev looking to ace your next interview or debug complex async issues — this video will clear up everything.
🧠 📚 Chapters: 00:00 – Intro: What is the Event Loop?
00:48 – Why doesn’t setTimeout block code?
01:05 – Event Loop Explained with a Diagram
01:22 – Call Stack & Synchronous Code
01:55 – Third-party APIs & Code Execution
02:07 – How Synchronous Code Runs
02:33 – Microtask Queues & Stacks
02:58 – What are Macrotasks?
03:40 – Execution Order: Sync → Microtasks → Macrotasks
04:23 – Microtasks vs Macrotasks
04:46 – Call Stack and Queue Flow
05:15 – HTML + JS Example: Sync Execution
06:50 – Sync Function Execution Ends
07:45 – setTimeout & Web API Example
08:43 – setTimeout with 0 Delay Explained
09:30 – Promises Run Before Macrotasks
09:57 – Another Example: Logs, Promises & Timers
10:54 – Real-World API Fetch Example
11:33 – Fetch + setTimeout Order
12:32 – Promise Resolution Before setTimeout
13:16 – Final Output Order Recap
14:14 – Callbacks vs Promises
15:24 – Recap: Event Loop Summary
15:47 – Ask Questions & Channel Update
16:30 – Future Videos Preview
💡 *Subscribe* for more JavaScript deep dives, real-world demos, and web dev content every week!
#JavaScript #EventLoop #AsyncJS #JavaScriptTutorial #WebDev #CodingDeepDive #setTimeout #Promises
Watch video What is the event loop in JavaScript, and how does it work? online without registration, duration hours minute second in high quality. This video was added by user Suman Kalia 01 January 1970, don't forget to share it with your friends and acquaintances, it has been viewed on our site 46 once and liked it 2 people.