The Math Object

Javascript (and some other languages) have built-in mathematics commands to simplify your life. In JS this is called the Math object.

The various abilities of the Math object can be found in various locations online. Here is a sampling of what you might use.

Code	Description
Math.PI	Returns 3.141592653589793
Math.pow(base, exponent)	Returns the base raised to the exponent
Math.sqrt(number)	Returns the square root of the given number
Math.round(number)	Rounds the given number to the nearest integer
Math.ceil(number)	Returns the number rounded up to the nearest integer Ex. Math.ceil(5.1) returns 6
Math.floor(number)	Returns the number rounded down to the nearest integer Ex. Math.floor(5.8) returns 5
Math.random()	Returns a pseudorandom decimal number between 0 and 1. Use it in conjunction with Math.floor() to return an integer.