Promises - Part 8 of Functional Programming in JavaScript

💖 Support the show by becoming a Patreon   / funfunfunction   Promises are, just like callbacks, a way of dealing with things being asynchronous - when we don't know for certain in what order things will happen. But promises are more powerful than callbacks because they compose - you can combine promises and chain them, all kinds of cool stuff - I've showed you some in this video, but there is WAY more you'll be able to do when you get comfortable with promises. Full code example from the video here: https://github.com/mpj/fpjs8 Much inspiration for this episode was drawn from this fantastic guide y mattdesl: https://github.com/mattdesl/promise-c... 💛 Follow on Twitch We record the show live Mondays 7 AM PT   / funfunfunction   💛 Fun Fun Forum Private discussion forum with other viewers in between shows. https://www.funfunforum.com. Available to patron members, become one at   / funfunfunction   💛 mpj on Twitter   / mpjme   💛 CircleCI (Show sponsor) Robust and sleek Docker-based Continuous Integration as a service. I used CircleCI prior to them becoming a sponsor and I love that their free tier is powerful enough for small personal projects, even if they are private. Use this link when you sign up to let them know you came from here: https://circleci.funfunfunction.com 💛 Quokka (Show sponsor) Wonder how MPJ evaluates JavaScript inline his editor. Quokka is the answer - use this link when you buy to let them know you came from here: http://quokka.funfunfunction.com 💛 FUN FUN FUNCTION Since 2015, Fun Fun Function (FFF) is one of the longest running weekly YouTube shows on programming 🏅 thanks to its consistency and quality reaching 200,000+ developers. 🤦‍♂️ The Failing Together concept is what makes FFF unique. Most coding content out there focus on step-by-step tutorials. We think tutorials are too far removed from what everyday development is like. Instead, FFF has created a completely new learning environment where we grow from failure, by solving problems while intensively interacting with a live audience. Tutorials try to solve a problem. Failing Together makes you grow as a developer and coworker. 📹 Each show is recorded live on Twitch in a 2-hour livestream on Mondays. The host, assisted by the audience, is tasked to complete a programming challenge by an expert guest. Like in the real world, we often fail, and learn from it. This, of course, reflects what the audience identifies with, and is one of the most praised aspects of the show. ⏯ On Fridays, an edited version of the show is adapted for and published on YouTube. Content Topics revolve around: JavaScript, Functional Programming, Software Architecture, Quality Processes, Developer Career and Health, Software Development, Project Management