Appendix A. Glossary

2’s complement

An internal method that computers use to represent negative values.

absolute value

The positive representation of a positive number, zero, or a negative number.

abstraction

The name given to an object’s details that are hidden from the view or use of other parts of the program that use the object.

accumulator

A variable that is updated as a program executes.

ActiveX

Prewritten objects that work as controls that you can embed in a web page.

AJAX

Asynchronous JavaScript and XML. JavaScript’s capability to communicate with a web server without submitting a form or loading a page.

algorithm

A common procedure or step-by-step methodology for performing a specific task and producing desired results.

anchor tag

Get Beginning Programming in 24 Hours, Sams Teach Yourself, Third Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.