Table of Contents
JavaScript Operators
JavaScript operators are symbols that perform operations on operands, such as variables or values. They are used to manipulate data and perform various computations. Here are the main types of operators in JavaScript with examples:
Arithmetic Operators
- These operators perform basic mathematical operations.
| Operators Name | Operators Symbol Name |
|---|---|
| + | Addition |
| – | Subtraction |
| * | Multiplication |
| / | Division |
| % | Modulus (remainder after division) |
| ** | Exponentiation |
javascript
let x = 5;
let y = 2;
let result;
result = x + y; // Addition
result = x - y; // Subtraction
result = x * y; // Multiplication
result = x / y; // Division
result = x % y; // Modulus (remainder after division)
result = x ** y; // ExponentiationComparison Operators
- These operators compare values and return a Boolean result.
| Operators Name | Operators Symbol Name |
|---|---|
| Equal to | == |
| Not equal to | != |
| Greater than | > |
| Less than | < |
| Greater than or equal to | >= |
| Less than or equal to | <= |
javascript
let a = 5;
let b = 10;
console.log(a == b); // Equal to
console.log(a != b); // Not equal to
console.log(a > b); // Greater than
console.log(a < b); // Less than
console.log(a >= b); // Greater than or equal to
console.log(a <= b); // Less than or equal to
Logical Operators
- These operators perform logical operations and return a Boolean result.
| Operators Name | Operators Symbol Name |
|---|---|
| AND | && |
| OR | || |
| NOT | ! |
javascript
let p = true;
let q = false;
console.log(p && q); // Logical AND
console.log(p || q); // Logical OR
console.log(!p); // Logical NOT
Assignment Operators
- These operators assign values to variables.
javascript
let a = 5;
a += 3; // Equivalent to a = a + 3
a -= 2; // Equivalent to a = a - 2
a *= 4; // Equivalent to a = a * 4
a /= 2; // Equivalent to a = a / 2
Unary Operators
- Operators that work on a single operand.
| Operators Name | Operators Symbol Name |
|---|---|
| Unary negation (changes the sign) | (–x) |
| Increment | (++x) |
| Decrement | (–x) |
javascript
let x = 5;
console.log(-x); // Unary negation (changes the sign)
console.log(++x); // Increment
console.log(--x); // Decrement
Conditional (Ternary) Operator
- A shorthand for an if-else statement.
javascript
let age = 20;
let message = (age >= 18) ? 'Adult' : 'Minor';
Bitwise Operators
- Perform bit-level operations on integers.
| Operators Name | Operators Symbol Name |
|---|---|
| AND | & |
| OR | | |
| XOR | ^ |
| NOT | ~ |
| Left shift | << |
| Right shift | >> |
javascript
let a = 5; // Binary: 0101
let b = 3; // Binary: 0011
console.log(a & b); // Bitwise AND (0001)
console.log(a | b); // Bitwise OR (0111)
console.log(a ^ b); // Bitwise XOR (0110)
console.log(~a); // Bitwise NOT (1010)
console.log(a << 1); // Left shift (1010)
console.log(a >> 1); // Right shift (0010)