[gpa]

Perhaps this MDN article, which used to be called "A re-introduction to JavaScript" and is now called "JavaScript language overview": 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/

[AlexITC]

For some reason the link isn't complete, this one worked for me: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Lang...