I started writing a book on jq, but realised it wasn't really enough for a full book, so put it out as a series of blog posts:

JQ really is the best kept secret in data.

Oh my - your series of blog posts come up regularly for me when googling jq things.

I'm curious about this web page: Did you compile jq targeting WASI/WASM to run an in-browser version?

I am using https://github.com/biowasm/aioli which provides a already compiled wasm jq along with all the related support code for calling it