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JavaScript Operators

JavaScript supports various types of operators, which are symbols used to perform operations on operands (variables, values, or expressions).


Here's an overview of the different types of operators in JavaScript:

  • Arithmetic Operators
  • Assignment Operators
  • Comparison Operators
  • String Operators
  • Logical Operators
  • Bitwise Operators
  • Ternary Operators
  • Type Operators

JavaScript Arithmetic Operators

Used to perform arithmetic operations on numeric operands.

Example

let a = 3;
let x = (100 + 50) * a;

Operator Description
+ Addition
- Subtraction
* Multiplications
/ Division
% Modulus
++ Increment
-- Decrement
** Exponentiation

Assignment Operators

Used to assign values to variables.

Example

 let a = 10;
let b = 5;
a += b; // Equivalent to a = a + b;

Operator Example Same As
= x = y x = y
+= x+=y x = x + y
-= x-=y x = x - y
*= *= x = x * y
/= /= x = x / y
%= %= x = x % y
**= x**=y x = x ** y

Comparison Operators:

Used to compare two values and return a Boolean result.

Example

  let c = 10;
let d = 5;
console.log(c > d); // Greater than (>)
console.log(c < d); // Less than (<)
console.log(c >= d); // Greater than or equal to (>=)
console.log(c <= d); // Less than or equal to (<=)
console.log(c === d); // Equal to (strict equality) (===)
console.log(c !== d); // Not equal to (!==)

Operator Description
== equal to
=== equal value and equal type
!= not equal
!== not equal value or not equal type
> greater than
< less than
>= greater than or equal to
<= less than or equal to
? ternary operator

Logical Operators:

Used to perform logical operations.

Example

let e = true;
let f = false;
console.log(e && f); // Logical AND (&&)
console.log(e || f); // Logical OR (||)
console.log(!e); // Logical NOT (!)

Operator Description
&& logical and
|| logical or
! logical not

Bitwise Operators:

Used to perform bitwise operations on operands.

Example
let g = 5; // 101 (in binary)
let h = 3; // 011 (in binary)
console.log(g & h); // Bitwise AND (&)
console.log(g | h); // Bitwise OR (|)
console.log(~g); // Bitwise NOT (~)
console.log(g ^ h); // Bitwise XOR (^)
console.log(g << 1); // Bitwise Left Shift (<<)
console.log(g >> 1); // Bitwise Right Shift (>>)

Operator Description
& AND
| OR
~ NOT
^ XOR
<< left shift
>> right shift
>>> unsigned right shift

String Operators

Used to concatenate strings.

Example

let str1 = "Hello";
let str2 = "World";
let greeting = str1 + " " + str2; // Concatenation (+)

Unary Operators:

Unary Operators:

Example

let i = 5;
console.log(-i); // Unary Negation (-)
console.log(+i); // Unary Plus (+)
console.log(++i); // Increment (++)
console.log(--i); // Decrement (--)
You can click on above box to edit the code and run again.

Output