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Indiana Principles Glossary

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Hello World General

Traditionally the very first program you write when learning a programming language, a program that prints "Hello world" to the user.

println JavaScript

JavaScript function that prints out a line to the user

Boolean JavaScript

A boolean is a true or false value.

Boolean

Declare a Variable JavaScript

Declaring a variable is defining it for the first time.

Declare a Variable

Variable General

A symbol or container that holds a value.

variable

Integer JavaScript

A whole number (not a fraction)

integer

String JavaScript

A sequence of characters

string

Initialize a Variable JavaScript

Initializing a variable is giving it an initial value.

Float JavaScript

A float, or floating point value, is a numeric value that can have decimal level precision (ex: 3.14)

readLine JavaScript

Allows for the reading of user input when a string is used

readLine

readInt JavaScript

Allows for the reading of user input when an integer is used

readInt

readFloat JavaScript

Allows for the reading of user input when a float number is used

readFloat

Constant JavaScript

A variable in a program that has a value that does not change.

Constant

Magic Number JavaScript

A number in your code that appears arbitrary. These should all be replaced with calculations or constants.

Magic Number

Parentheses General

( and )

Parentheses

Increment General

To add to or increase

Increment

Decrement General

To subtract from or decrease

decrement

Canvas JavaScript

The screen in which our graphics programs are drawn.

Canvas

Coordinate system JavaScript

A coordinate system uses numbers as coordinates to place objects in a geometric space.

coordinate system

getWidth() JavaScript

JavaScript function that returns the width of the graphics canvas

getHeight() JavaScript

JavaScript function that returns the height of the graphics canvas

Radius JavaScript

The length between the center and edge of a circle

IDE General

IDE Consists of a combination of tools used for software development.