UserScripts in 20 Minutes (Coffee Book Series)

Very good, with a few caveats. The core material is strong.

I have been working with javascript for a few years now and I still found plenty here that was new to me. It is denser than the page count suggests, and I found myself slowing down around the middle. I appreciated the honesty about what the book does not cover — it saved me from expecting things that were not there. The author clearly knows the subject deeply and has thought hard about how to teach it. Solid, and I would buy another book from this author without hesitation.

I got a lot out of this, even if a few sections felt rushed.

I bought this on a whim after seeing it mentioned in a forum thread, and I am glad I did. The index and cross-references are surprisingly good, which matters for a book I will come back to. A couple of chapters felt like they could have been merged, but that is a minor complaint. The early chapters move quickly through material I already knew, but the later sections were genuinely new to me. Recommended, with the caveat that it is not a gentle introduction.

It does the job, though it took some patience to get through.

I came to this book already familiar with the basics, and it still had plenty to offer. The balance between theory and practice is well judged; neither side dominates. The author avoids over-explaining, which keeps the pace up but means you need to pay attention. Three stars feels about right. It will stay on my shelf, but it will not be the first one I reach for.