JS: Math Operators

Basic Arithmetic

// plus, add
(3 + 4) === 7

// minus, substraction
(3 - 4) === -1

// negation
-(-3) === 3

// multiply
3 * 4 === 12

// divide
3 / 4 === 0.75

Remainder, Mod

7 % 2 === 1

7.4 % 2 === 1.4000000000000004

7 % 3.4 === 0.20000000000000018

Ceiling, Floor, Round

Math.floor(3.5847) === 3

Math.ceil(3.5847) === 4

Math.round(3.54) === 4

Math.round(3.55) === 4

Root, Power, Exponential

// power. JS2016
2 ** 3 === 8;

// same as
Math.pow(2, 3) === 8;

// square root
Math.sqrt(4) === 2

// cube root
Math.cbrt(8) === 2

// 4th root
Math.pow(16, 1 / 4) === 2