The Myth of Single-Threaded JavaScript: Inside the Language’s Hidden Concurrency Engine

This story was originally published on HackerNoon at: https://hackernoon.com/the-myth-of-single-threaded-javascript-inside-the-languages-hidden-concurrency-engine. Explore the concurrency model of modern JavaScript, including the event loop, async/await, and more. Check more stories related to programming at: https://hackernoon.com/c/programming. You can also check exclusive content about #javascript, #concurrency, #webdev, #tutorial, #javascript-concurrency, #single-threaded-javascript, #microtasks-vs-macrotasks, #asynchronous-programming, and more. This story was written by: @hacker5295744. Learn more about this writer by checking @hacker5295744's about page, and for more stories, please visit hackernoon.com. Modern JavaScript offers a rich (although muddled) concurrency landscape. From the event loop and. async/await to Web Workers, async iterators, and Shared.ArrayBuffers. Understanding how these layers of concurrency interact is essential for building responsive UIs, scalable backends, and reliable serverless functions.