Javascript Event Loop and Queues - Vanakkam Javascript - JS Tutorial | Tamil | 2025 | Part 3

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Javascript Event Loop and Queues - Vanakkam Javascript - JS Tutorial | Tamil | 2025 | Part 3 This video is made in collaboration with JS Lovers Community. Everything covered in this video is explained in detail in the following link : https://dev.to/jslovers/mastering-async-js-demystifying-the-event-loop-microtasks-macrotasks-1ha Chapters: 00:00 Intro 00:50 Single-Threaded Language 01:20 Call Stack 02:28 Web APIs 07:23 JS execution Flow 07:55 Example 1 (Basic) 11:50 Example 2 19:12 Example 3 (Advanced) 27:09 Task Starvation 28:38 Key Takeaways 29:50 Conclusion Learn how the browser event loop, task queue, microtask queue, and Web APIs work together to enable non-blocking, asynchronous JavaScript. JavaScript is a synchronous, single-threaded language, but async operations like setTimeout, fetch, and event listeners rely on the event loop, microtasks, and macrotasks for execution. 🔹 Key Concepts: ✅ JavaScript executes synchronous code first. ✅ Asynchronous tasks use Web APIs and the event loop. ✅ Microtasks (Promises, MutationObserver) execute before Macrotasks (setTimeout, event listeners). ✅ Fetch responses (microtasks) execute before setTimeout callbacks (macrotasks). ✅ Task starvation can occur if microtasks keep running without allowing macrotasks. By mastering these, you can write efficient & bug-free async JavaScript! 🚀 Whatsapp Channel: https://whatsapp.com/channel/0029VaYIn3NJUM2WPkmJ9I43 Join Membership: https://www.youtube.com/channel/UCVXHYmFar7yArWvkcjxWXuQ/join 📢📢📢📢 Social Media Links 📢📢📢📢 Mentorship 1:1 : https://www.meetmymentor.me/hareesh_rajendran Buy me a coffee ☕️ : https://www.buymeacoffee.com/hareeshrajendran LinkedIn: https://www.linkedin.com/in/hareesh-r/ Instagram: https://www.instagram.com/hareesh_._r/ Facebook: https://www.facebook.com/hareeshprogrammer/ Twitter: https://twitter.com/hareesh_dev GitHub: https://github.com/hareesh-r Curious to know more about me?: https://hareesh.web.app🚀 Your support means the world to me! 🙌 Let's build an awesome community together. 🌍✨