TLDR: Use for...of
instead of forEach()
in asynchronous code.
For legacy browsers, use for...i
or [].reduce()
To execute the promises in parallel, use Promise.all([].map(...))
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.