JavaScript Operators: The Basics You Need to Know

Hey Everyone,

In this blog, we will learn about JavaScript Operators.

In programming, we often need to perform calculations, compare values, or combine conditions.

For example:

• Add two numbers

• Check if two values are equal

• Verify multiple conditions

To perform these actions, JavaScript uses operators.

Let’s understand the most important ones every beginner should know.

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What Are Operators?

An operator is a symbol that tells JavaScript to perform an operation on values.

Example:

let result = 5 + 3;
console.log(result) // 8

Here:

• + is the operator

• 5 and 3 are operands

Example

let a = 10;
let b = 3;

console.log(a + b);
console.log(a - b);
console.log(a * b);
console.log(a / b);
console.log(a % b);

Output:

13
7
30
3.333...
1

The % operator returns the remainder of a division.

Example:

10 % 3 = 1

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Comparison Operators

Comparison operators compare two values and return true or false.

Operator	Meaning
==	Equal (value only)
===	Strict equal (value + type)
!=	Not equal
>	Greater than
<	Less than

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Example

let x = 10;
let y = 20;

console.log(x > y);

Output

false

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Difference Between and =

This is very important in JavaScript.

Using ==

console.log(5 == "5"); // true

Why?

Because == converts types before comparing.

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Using ===

console.log(5 === "5"); // false

Because:

• 5 → number

• "5" → string

=== checks both value and type.

Best practice:

Use === in most cases.

Logical Operators

Logical operators combine multiple conditions.

Example: AND (&&)

let age = 20;
let hasID = true;

if (age >= 18 && hasID) {
  console.log("Entry allowed");
}

Both conditions must be true.

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Example: OR (||)

let isWeekend = true;
let isHoliday = false;

if (isWeekend || isHoliday) {
  console.log("You can relax");
}

Only one condition needs to be true.

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Example: NOT (!)

let isLoggedIn = false;

console.log(!isLoggedIn); // true

Assignment Operators

Assignment operators are used to assign or update values.

Operator	Meaning
=	Assign value
+=	Add and assign
-=	Subtract and assign

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Example

let score = 10;

score += 5;

console.log(score); // 15

Equivalent to:

score = score + 5;

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Practice Assignment

Try these examples in your browser console.

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1. Arithmetic Operations

let a = 8;
let b = 4;

console.log(a + b);
console.log(a - b);
console.log(a * b);
console.log(a / b);

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2. Compare Values

console.log(5 == "5");
console.log(5 === "5");

Observe the difference.

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3. Logical Condition

let age = 19;
let hasTicket = true;

if (age >= 18 && hasTicket) {
  console.log("You can enter the event");
}

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And now, you know what JS operators are.

If you have any doubt or want to connect, feel free to drop a comment — I’d be happy to help.

Thanks for reading, and see you in the next blog!

Peace ✌️ and Happy Learning!