JavaScript Visualized - Event Loop, Web APIs, (Micro)task Queue

Learn how the browser event loop, task queue, microtask queue, and Web APIs work together to enable non-blocking, asynchronous JavaScript.

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Timestamps:

0:00 Intro

0:32 Call Stack

1:18 Single-threaded Problem

2:01 Web APIs

2:47 Callback-based APIs

4:04 Task Queue

4:39 setTimeout

6:22 Microtask Queue

8:40 Promisifying Callbacks

8:57 Challenge

10:52 Recap

11:58 Outro