Operators

An operator is a special character or series of characters that perform a task in JavaScript.

The assignment operator (=) assigns a value to a variable.

var x = 10;

Arithmetic operators are used to perform arithmetic on numbers:

• + addition
• - subtraction
• * multiplication
• / division
• % modulo

// Addition
5 + 5;
// Subtraction
10 - 5;
// Multiplication
5 * 10;
// Division
10 / 5;
// Modulo
10 % 5;

An assignment operator assigns a value to its left operand based on the value of its right operand. Here are some of them:

• += addition assignment
• -= subtraction assignment
• *= multiplication assignment
• /= division assignment

let number = 100;

// Both statements will add 10
number = number + 10;
number += 10;

console.log(number);
// Output: 120

• == 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