Summary

In this chapter, we learned about asynchronous programming in JavaScript. We explored asynchronous APIs such as setTimeout and fetch, and we learned how to handle asynchronous code using callbacks, promises, and async/await. Additionally, we learned about the error first callback convention and how to prevent callback hell using named functions and promises. Finally, we learned how to manage promises, how to bulk operations using the Promise.all and Promise.race methods, and how to use the async and await keywords to handle asynchronous code in a cleaner way.

In the next chapter, we will learn about HTTP and how the modern web works using REST APIs.