The list of JavaScript features that every web developer should know in 2025 in order to efficiently code in JavaScript.

That’s a great article especially regarding the alternative to map() and filter()

Learn about installing Sails.js and Node.js, and get acquainted with some of Sails's major concepts, such as convention over configuration, loose coupling, and what Sails is and is not.

Shared by Frank at Mural

Philip Roberts' talk at JS Conf, is one of the most-watched talks in the JavaScript community, for a good reason. It's excellent.
He's also the creator of the loupe tool that you've been using in this chapter.

We definitely recommend that you watch his 25-minute talk on the event loop at some point in your career: What the heck is the event loop anyway?

Several students left a comment on this lesson saying that they learned a lot from this video.

Recommended from the FullStackOpen 2022 class

A new type of function in JS that I had no idea existed! Seems pretty nifty and borrow from Ruby blocks it fells. Well, at least the yield keyword is really nice!

How to: avoid typeof and ask JavaScript objects to describe themselves.

To watch later

A tool to explore the web and the undocumented APIs in order to make your own Java / JavaScript API directly usable from scratch! Awesome!

Interesting concept where you let your users store their own data while using your application (they provide the back-end storage)