Operators in JavaScript with Example

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In this JavaScript tutorial, we are going to learn about Operators in JavaScript.

What are Operators?

• Operators are symbols used to perform some operations.

• The operation can be performed on one or more than one operand.

Types of Operators

• Unary Operators

• Logical Operators

• Relational Operators

• Arithmetic Operators

• Assignment Operators

• Comparison Operators

• Bitwise Operators

• Ternary Operator

Types of Operators in JavaScript

1. Unary Operators

• These operators are used on a single variable.

• Unary Operators are used to increment and decrement the value of a variable.

• Unary operators are: ++, -- +, -, ~!

Example:

let num = 20;

num++;

console.log(num);

//Output: 21

2. Logical Operators

• Logical operators are used on one or more than one variable.

• Logical operators return true or false values.

• Logical operators are: &&, ||, !

Example:

let num = 20;

if(num>15 && num<25)

 {

 console.log("You are Young");

 }

//Output: You are Young

3. Relational Operators

• Relational operators describe the relation between two variables.

• These operators return true or false.

• Relational operators are: ==, <, <=, >, >=, !=

Example:

let num = 20;

if(num === 20){

console.log("Num is = 20");

}

else{

 console.log("Num is not equal to 20");

}

//Output: Num is = 20

4. Arithmetic Operators

• Arithmetic operators are used to perform arithmetic operations.

• These operators perform the operation and store the new variable.

• These operators are: +, -, *, /, %

Example:

let num1 = 20;

let num2 = 4;

let result = num1 + num2;

console.log(result)

//Output: 24

5. Assignment Operators

• Assignment operators are used to assign value to the variable.

• Assign the value by performing different operations.

• Assignment operators are: =, +=, -=, *=, /=, %=, etc.

Example:

let num1 = 20;

let num2 = 4;

let result = num1 + num2;

console.log(result)

//Output: 24

6. Comparison Operators

• Comparison operators in JavaScript are used to compare two values.

• These return a boolean result indicating whether the comparison is true or false.

• Comparison operators are: ==, !=, ===, !==, >, <, >=, <=

Example:

let num1 = 20;

let num2 = 4;

let result = num1 > num2;

console.log(result)

//Output: true

7. Bitwise Operators

• These manipulate the individual bits of numeric values.

• These perform bitwise operations on binary representations of numbers at the bit level.

• Bitwise operators are: &, |, ^, ~, <<, >>, >>>

Example:

let num1 = 5;

let num2 = 3;

let resultAnd = num1 & num2;

console.log(resultAnd);

//Output: 1

8. Ternary Operator

• The Ternary Operator in JavaScript is also known as the conditional operator.

• It provides a concise way to write conditional expressions.

• The ternary operator allows you to evaluate a condition and return one of two values based on whether the condition is true or false.

Syntax:

condition ? expression1 : expression2;

• The condition is evaluated.

• If the condition is true, then expression1 is executed and returns its value.

• If the condition is false, then expression2 is executed and returns its value.

Example:

let age = 18;

let result = (age >= 18) ? 'You are an Adult' : 'You are not an Adult';

console.log(result);

// Output: 'You are an Adult'

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