JAVASCRIPT

JAVASCRIPT ARITHMETIC OPERATORS

As in other programming languages, javascript also allows you to perform arithmetic calculations with +, -, *, /, %, ++ and --.

The following are examples of arithmetic calculations using these operators:

Addition ( + )

var num1=20 + 20;

alert(num1);// outputs 40

var num1=1.14;
var num2=3.16;
var num_total= num1 + num2;

alert(num_total);// outputs 4.3

Subtraction ( - )

var num1=20 - 20;

alert(num1);// outputs 0

var num1=5;
var num2=3.2;
var num_total= num1 - num2;

alert(num_total);// outputs 1.8

Multiplication ( * )

var num1=10 * 30;

alert(num1);// outputs 300

var num1=34;
var num2=2;
var num_total= num1 * num2;

alert(num_total);// outputs 68

Division ( / )

var num1=4000 / 40;

alert(num1);// outputs 100

var num1=60;
var num2=2;
var num_total= num1 / num2;

alert(num_total);// outputs 30

Modulus - remainder after a division ( % )

var num1=45 % 40;

alert(num1);// outputs 5

var num1=60;
var num2=2;
var num_total= num1 % num2;

alert(num_total);// outputs 0 (no remainder)

Increment Variable By 1( ++ )

var num1=200;
num1++

alert(num1);// outputs 201

Decrement Variable By 1( -- )

var num1=200;
num1--

alert(num1);// outputs 199