Exploring Promise Functions in JavaScript

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Exploring the nuances between promise.race and promise.any in JavaScript, highlighting their behavior when resolving promises. Practical examples like sending data to multiple APIs are used to illustrate their distinctions and applications.

We’re diving into part 2 of our 3-part series on Promises, focusing on error handling, aborts, and essential helper methods. We’ll explore how to manage errors effectively and improve performance with abort signals. Let’s get into it!

Show Notes

00:00 Welcome to Syntax!
00:41 Brought to you by Sentry.io.
02:00 Cancelling promises.
05:16 Why would you reach for an abort signal?
06:26 Promise helpers.
- 07:04 Promise.all() vs Promise.allSettled().
- 09:12 promiseInstance.finally()
- 09:26 Promise.any() and Promise.race()
12:08 Error handling strategies.
- Tuple await-to-js.
- Youtube - 5 Async + Await Error Handling Strategies.
17:30 Promise.race() example.
18:54 Static Promise.reject() and .resolve() methods.