Game Lab Documentation

Drawing

Control

For loop

If statement

If/else statement

While loop

clearInterval(interval)

clearTimeout(timeout)

Variables

Declare and assign a string to a variable

Declare and assign a value to a variable

Declare and assign an array ["a", "b", "d"] to a variable

Declare and assign an array [1,2,3] to a variable

[list].length

[string].includes(searchValue)

[string].indexOf(searchValue)

[string].length

[string].substring(start, end)

[string].toLowerCase()

[string].toUpperCase()

comment

console.log(message)

Functions

Call a function

Call a function with parameters

Comment

Define a function

Define a function with parameters

return

Subtract operator

Category:Math

All programming languages support the basic arithmetic operations of addition, subtraction, multiplication and division of numbers.

Examples

Example: Typical Usage

Subtract two numbers.

console.log(3-5);
var x=3;
var y=5;
console.log(x-y);

Syntax

value1 - value2

Parameters

Name	Type	Required?	Description
value1	any		The operands can be a number, or a variable containing a number, or the number returned by a function, or the numeric result of the evaluation of an expression.
value2	any		Same as `value1` but serves as the amount to subtract from the first value.

Returns

The difference of two numbers.

Tips

Operator precedence is the same as standard arithmetic - Expressions within a parentheses have the highest precedence, then multiplcation and division, then addition and subtraction.

Found a bug in the documentation? Let us know at support@code.org.