Re:Ask HN: Best ways to brush up JavaScript knowledge
by AlexITC on Sunday August 06, 2023 @12:53PM
(#37023948)
For some reason the link isn't complete, this one worked for me: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Lang...
Also, if you search for "A re-introduction to JavaScript" in HN Search, you will find previous posts of the same article with comments pointing to other similar sources.
The book Eloquent JavaScript is also available online, but is longer: https://eloquentjavascript.net/