What is JavaScript concurrency and how does it work?

What is JavaScript concurrency and how does it work?

JavaScript concurrency refers to the ability of JavaScript to handle multiple tasks at once, using mechanisms like the event loop.

Can you explain the event loop in more detail?

Sure! The event loop is a core part of JavaScript's concurrency model, allowing it to perform non-blocking operations by managing a queue of tasks.

What are callbacks, promises, and async/await in this context?

Callbacks are functions passed as arguments to handle asynchronous operations. Promises represent a value that may be available now or in the future, while async/await syntax allows for writing asynchronous code that looks synchronous.

How do these concepts improve performance in web applications?

They improve performance by allowing JavaScript to handle I/O operations without blocking the main thread, leading to a smoother user experience.