Learn a new term:

Boolean
In computer science, a boolean is a logical data type that can have only the values true or false. A boolean is how a programming language lets you represent true and false. Without the ability to represent the boolean values a number of things in a language would no longer work. For example, in JavaScript, an if statement's conditional has to resolve to a boolean value for it to execute at all.  In a JavaScript for loop without it's boolean conditional the loop would never know whether to run it's coding or not.

Web technologies contain long lists of jargon and abbreviations that are used in documentation and coding. This glossary provides definitions of words and abbreviations you need to know to successfully understand and build for the web.

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Other

Contribute to the glossary

This glossary is a never ending work in progress. You can help improving it by writing new entries or by making the existing ones better. The easiest way to start is to hit the following button or to pick one of the suggested terms below.

If you want to know more on how to contribute to the glossary, check out the glossary documentation status page.

Join the Glossary community

Choose your preferred method for joining the discussion: