Apr 15, 2025 · The event loop is an important concept in JavaScript that enables asynchronous programming by handling tasks efficiently. Since JavaScript is single-threaded, it uses the event loop to manage the execution of multiple tasks without blocking the main thread.

In this tutorial, you have learned about the JavaScript event loop, a constantly running process that coordinates the tasks between the call stack and callback queue to achieve concurrency.

May 17, 2024 · Browser JavaScript execution flow, as well as in Node.js, is based on an event loop. Understanding how event loop works is important for optimizations, and sometimes for the right architecture. In this chapter we first cover theoretical details about how things work, and then see practical applications of that knowledge.

Dec 16, 2024 · The event loop is a core concept in JavaScript that enables non-blocking, asynchronous behavior. Understanding how the event loop works is essential to mastering JavaScript, especially...

Apr 5, 2024 · Event loop manages asynchronous operations and ensures non-blocking behavior. While JavaScript code is executed sequentially, asynchronous tasks, such as timers or AJAX requests, are...

Sep 5, 2022 · Today we’re going to learn all about the event loop in JavaScript! By the end of this article hopefully you’ll have a basic understanding of how the event loop works as well as the queues and stacks involved that make it happen, so let's get to it!

Apr 18, 2018 · The event loop continuously checks the call stack to see if there’s any function that needs to run. While doing so, it adds any function call it finds to the call stack and executes each one in order.

Feb 2, 2025 · The Event Loop is a mechanism in JavaScript that enables asynchronous programming. It allows JavaScript to execute non-blocking operations, such as network requests, timers, and DOM events,...

6 days ago · Here, First prints because it’s the first thing in the code.; setTimeout is an asynchronous task, so it goes to the Web API to wait.; The promise is quickly executed, so its.then() callback goes into the microtasks queue.; Then, Fourth prints because it’s the next line of synchronous code. The event loop first looks at the microtasks queue and runs the promise callback that prints Third ...

Jan 27, 2025 · The event loop is a mechanism that allows JavaScript to perform non-blocking, asynchronous tasks by managing a queue of operations and executing them in a specific order. Here’s a simple analogy: Think of JavaScript as a chef in a single-person kitchen (the single-threaded nature).