JavaScript Operators Overview

JavaScript Operators are symbols that perform operations on values and variables — like adding numbers, comparing values, or combining strings.

Types of JavaScript Operators

1. Arithmetic Operators

Used for basic mathematical calculations.

Operator	Description	Example	Result
`+`	Addition	`5 + 2`	`7`
`-`	Subtraction	`5 - 2`	`3`
`*`	Multiplication	`5 * 2`	`10`
`/`	Division	`10 / 2`	`5`
`%`	Modulus (Remainder)	`10 % 3`	`1`
`**`	Exponentiation (Power)	`2 ** 3`	`8`
`++`	Increment	`x++`	Adds 1
`--`	Decrement	`x--`	Subtracts 1

2. Assignment Operators

Used to assign or update variable values.

Operator	Example	Same As
`=`	`x = 5`	Assigns 5 to x
`+=`	`x += 2`	`x = x + 2`
`-=`	`x -= 2`	`x = x - 2`
`*=`	`x *= 2`	`x = x * 2`
`/=`	`x /= 2`	`x = x / 2`
`%=`	`x %= 2`	`x = x % 2`

3. Comparison Operators

Used to compare two values — returns a Boolean (true or false).

Operator	Description	Example	Result
`==`	Equal (loose)	`5 == "5"`	`true`
`===`	Strict Equal (checks type too)	`5 === "5"`	`false`
`!=`	Not Equal	`5 != 3`	`true`
`!==`	Strict Not Equal	`5 !== "5"`	`true`
`>`	Greater Than	`7 > 3`	`true`
`<`	Less Than	`7 < 3`	`false`
`>=`	Greater or Equal	`5 >= 5`	`true`
`<=`	Less or Equal	`3 <= 5`	`true`

4. Logical Operators

Used to combine multiple conditions.

Operator	Description	Example	Result
`&&`	AND	`x > 5 && y < 10`	`true` if both true
`		`	OR
`!`	NOT	`!(x > 5)`	Opposite of condition

5. Bitwise Operators

Operate on binary numbers.

Operator	Description	Example
`&`	AND	`5 & 1` → `1`
`	`	OR
`^`	XOR	`5 ^ 1` → `4`
`~`	NOT	`~5` → `-6`
`<<`	Left shift	`5 << 1` → `10`
`>>`	Right shift	`5 >> 1` → `2`
`>>>`	Zero-fill right shift	`5 >>> 1` → `2`

6. String Operators

Used to join (concatenate) strings.

let first = "Hello";
let last = "World";
console.log(first + " " + last); // Hello World

7. Ternary (Conditional) Operator

Shortcut for if...else statements.

let age = 18;
let result = (age >= 18) ? "Adult" : "Minor";
console.log(result); // Adult

8. Type Operators

Used to check or convert data types.

Operator	Description	Example	Result
`typeof`	Returns variable type	`typeof "Hello"`	`"string"`
`instanceof`	Checks object type	`arr instanceof Array`	`true`