JavaScript Arithmetic Operators

JavaScript arithmetic operators can perform the basic mathematical operations. Arithmetic Operators in JavaScript are: +, -, /, %, ++, —

+ Operator For Addition and Concatenation

It can do arithmetic operation to add numbers as well as string concatenation. Learn it from JavaScript variables and operators article.

// Using
var x = 5;
var y = 10;
var z;

Follow the example below to learn the JavaScript Arithmetic operations:

- Operator For Subtraction

z = y – x;

// Output:
// z = 5

/ Operator For Division of Numbers

It will output the quotient of mathematical division operation:

z = y / x;

// Output:
// z = 2

% Operator Also For division of Numbers

It returns remainder after division:

z = y % x;

// Output:
// z = 0

JavaScript Post increment/decrement and Pre increment/decrement

In JavaScript you use increment and decrement operators to increase the integer value by 1.

x++;
++x;
x--;
--x;

The difference between the post increment and pre increment is post increment increases the value of variable after being evaluated whereas pre increment increases the variable value before evaluating it.