Number

An number value.

A Number is a numeric value that is an integer or a rational number. Numbers are stored in multiple bytes in floating point format. This is so that numbers with a fractional portion can have precise calculations performed on them.

Some examples of different types of number values:

Declare a number variable

You can assign a number to a variable:

let num = 42

Arithmetic operators

The following arithmetic operators work on numbers and return a Number:

• addition: 1 + 3
• subtraction: 1 - 3
• multiplication: 3 * 2
• integer division: 7 / 3
• modulo is available through the math library

Relational operators

The following relational operators work on numbers and return a Boolean:

• equality: (3 + 1) = 4
• inequality: 3 != 4
• less or equal than: 3 <= 4
• less than: 3 < 4
• greater or equal than : 4 >= 3
• greater than: 4 > 3

Functions that return a number

Some functions return a number, which you can store in a variable.

let abs = Math.abs(-42)

Math functions

The math library includes math related functions. For example, the min function returns the minimum value of two input parameters x and y:

let lowest = Math.min(-42, 1000)

See also

math, var, Boolean

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