Promises and async/await (first look)
Comes up in: Recruiter screen, JavaScript
This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.
What it covers
- why callbacks nest ("callback hell")
- a promise as a future value
then/catch/finallyasync/await- error handling with
try/catch
Words you will know
What you will practise
- convert callback code to async/await
Interview questions this answers
- What is a promise? What are its three states?