Do You Really Know Promises in JavaScript?

Описание: 15 questions about Promises in JavaScript. Level-up your knowledge and prepare for an interview.

0:00 Introduction
0:11 Q1: Promise states
0:49 Q2: What does .then() do to a promise
1:30 Q3: Messages order
2:01 Q4: 2 thens, 1 promise
2:20 Q5: Even more thens
2:39 Q6: Implement wait(time)
3:34 Q7: Catch before then
4:57 Q8: Async-await - many requests
5:29 Q9: Async-await - many requests II
6:06 Q10 Cancelling a promise
6:55 Q11: then(a, b) vs then(a).catch(b)
8:16 Q12: Promise.all and Promise.race
8:55 Q13: Implement promiseAll and promiseRace
10:07 Q14: Implement promiseChain
11:17 Q15: Implement eager promiseChain