What are Primitive Data Types in JavaScript?

Primitive Data Types in JavaScript

There are 7 primitive data types in JavaScript:

1. String – Represents text.

   let name = "John";
   console.log(name); // "John"

2. Number – Represents both integers and floating-point numbers.

   let age = 25;
   let price = 99.99;
   
   console.log(age);   // 25
   console.log(price); // 99.99

3. Boolean – Represents true or false.

   let isLoggedIn = true;
   let hasPermission = false;
   
   console.log(isLoggedIn);   // true
   console.log(hasPermission); // false

4. Null – Represents an intentional empty value.

   let data = null;
   
   console.log(data); // null

5. Undefined – A variable that has been declared but not assigned a value.

   let city;
   
   console.log(city); // undefined

6. Symbol – Represents a unique and immutable value.

   let id = Symbol("id");
   
   console.log(id); // Symbol(id)

7. BigInt – Represents very large integers beyond the safe Number limit.

   let bigNumber = 1234567890123456789012345678901234567890n;
   
   console.log(bigNumber);