![]() Let's start ⏬īefore diving deep into the event loop, call stack, and tasks, let's begin with a little warm-up question. We've collected 4 interesting examples of code (it looks like 4 is our favorite number □) that will help you test your knowledge of event loop and JavaScript asynchronous execution flow. Tasks in the queues and call stack are coordinated by the event loop - the key mechanism used by JavaScript to avoid blocking the main thread. Besides practical aspects like asynchronous coding patterns and best practices, one of the discussed topics was the importance of understanding how JavaScript handles asynchronous code under the hood.Īsynchronous code is passed to wait in one of the queues and executed whenever the call stack is empty. It resulted in an article - 4 tips on writing better async/await code. Over the last few weeks, we had a lot of discussions on asynchronous JavaScript and patterns we use in our projects to build performant apps.
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