JavaScript Operators

Javascript Operators are used to assign, add, subtract, compare variables value. JavaScript is having Artimetic, logical, assignment and comparision operators.

JavaScript has binary, unary and ternaryoperators.

Binary operators required two operands, one before and one after operator. x+y=z

Unary operators required only one operand, either before or after operator. i++

Type of Operators in Javascript



Arithmetic Operators

An Arithmetic operator is used to perform Arithmetic operations between values. Like Addition, Subtraction, Multiplication, Division etc

Arithmetic operators in JavaScript

OperatorDescriptionExample
+ Addition 2+3=5
- Subtraction 5-3=2
* Multiply 2*3=6
/ Divide 6/3=2
% Modulus, check reminder 6%3=0
++ Increment, y++ means y = y+1 var y=2; ++y; y=3
-- Decrement, y-- means y = y-1 var y=2; --y; y=1

Logical Operators

Logical Operators are used to check logic between two operators. and (&&), or (||) and not (!) are logical operators.

Logical Operators in JavaScript

OperatorDescriptionExample
&& and, when both are correct 2 < 5 && 2> 1 is true
|| or, when any one is correct var x=2, 2>5 || x==2 is true
! not !(2==3) is true

Assignment Operators

Assignment operators ars used to assign some value to js variables. =, +=, -=, *=, /= are all assignment operators in javascript.

Assignment Operators in JavaScript

OperatorDescriptionExample
= Assignment x=2; means x is 2
+= Addition Assignment var x=2; x+=2 means x=x+2
-= Subtraction Assignment var x=2; x-=2 means x=x-2
*= Multiplication Assignment var x=2; x*=2 means x=x*2
/= Division Assignment var x=2; x/=2 means x=x/2

Comparision Operators

Comparision operators are used in a statement to compare two values.

Comparision Operators in JavaScript

OperatorDescriptionExample
== Equal to 2=="2" is true
=== Strict equal to 2==="2" is false
!= not equal 2!=1 is true
!== not strict equal 2!=="2" is true
> greater than 2> 5 is false,
& 2 <5 is true
>= greater than or equal to 3>=3 is true
< less than 1< 3 is true
<= less than or equal to 2<=2 is true