What is asynchronous JavaScript and how does it work?
Asynchronous JavaScript allows code to run in the background, enabling non-blocking operations. This means that while one task is waiting for a response (like a network request), other code can continue executing.
Can you explain the difference between callbacks, promises, and async/await?
Sure! Callbacks are functions passed as arguments to be executed later. Promises represent a value that may be available now or in the future, and they can be chained. Async/await is syntactic sugar over promises, allowing you to write asynchronous code that looks synchronous.
When should I use promises instead of callbacks?
Use promises when you have multiple asynchronous operations that depend on each other, as they help avoid callback hell and make your code cleaner and more manageable.
What are some common pitfalls when using async/await?
Common pitfalls include forgetting to use 'await' which can lead to unexpected results, and not handling errors properly, as unhandled rejections can crash your application.
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