I think "JavaScript: The good parts" from Douglas Crookford is the one that all JavaScript developers must read. I don't think that coming from html or css worlds would take benfit from it but you will learn a lot if you read it.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
I think "JavaScript: The good parts" from Douglas Crookford is the one that all JavaScript developers must read. I don't think that coming from html or css worlds would take benfit from it but you will learn a lot if you read it.