JavaScript

Arithmetic Operators

The standard arithmetic operators are addition (+), division (/) (returns a floating-point division in JavaScript e.g. x=1/2 returns 0.5), subtraction (-) and multiplication (*). Other arithmetic operators are:

Symbol	Name	Type	Description	Example
`--`	Decrement	Unary	As a prefix operator (`--x`), it subtracts 1 from the value of its operand then returns it. As a postfix operator (`x--`), it returns the value of its operand before subtracting 1.	If x is 2, then --x sets x to 1 and returns 1, whereas x-- sets x to 1 and returns 2.
++	Increment	Unary	As a prefix operator (++x), it adds 1 to the value of its operand then returns it. As a postfix operator (x++), it returns the value of its operand before adding 1.	If x is 2, then ++x sets x to 3 and returns 3, whereas x++ sets x to 3 and returns 2.
%	Modulus	Binary	Returns the integer remainder of dividing the two operands.	11 % 5 returns 1.
-	Unary negation	Unary	Returns the negation of its operand.	If x is 4, then -x returns -4.