Ask Why Not What reading lens
Examine the promise
Explore Books, Computers & Technology, Programming with a reading approach that gives the ideas somewhere to go. JavaScript gives an idea a place to become interactive. Choose a small behaviour you want to build, keep the inputs and outputs visible, and use that goal to connect explanation with practice.
The listed 110 pages give a sense of extent; page count alone does not establish depth or difficulty.
A question before you choose
Which claims are supported by the material I can actually inspect?
Try this with the topic
Choose one claim in the catalogue description. Identify what evidence would support it, what limits it might have, and what a sample could help you check.