Good point. However, most web developers starting with JS tend to come from PHP with its &$variable reference-passing magic. I seem to have chosen my wording b

Good point. However, most web developers starting with JS tend to come from PHP with its &$variable reference-passing magic. I seem to have chosen my wording badly, since I did not mean (labeled) blocks, but indeed the expression body (which may have been referenced in the book as a ”block”, too lazy to check).