JSON

Page numbers are for draft copy at present; they will be replaced with correct numbers when final book is formatted. Chapter numbers are correct and will not change now.

JSON is a data transfer notation especially important in web APIs such as REST. JSON is restricted a form of JavaScript data allowing data types such as numbers and strings as well as array and field-based data structures.

Used on Chap. 10: page 203; Chap. 17: pages 404, 405