Data Types in JavaScript

Explanation:

• Immutable types: Their values cannot be changed after creation.
• Mutable types: Their contents can be modified after creation (e.g., objects and arrays).

tip

• Primitive types are the basic data types that are immutable and are stored by value. Each primitive type represents a single value.
• Non-Primitive (Reference) types are more complex and are mutable. They can store collections of values or more complex entities. These types are stored by reference, meaning that variables refer to the memory address where the data is stored.

Data Type	Immutable	Storage Type	Description
Number	Yes	value	integer or floating-point numbers, including +Infinity, -Infinity, and NaN.
String	Yes	value	textual data enclosed in single, double, or backticks (template literals).
Boolean	Yes	value	logical entity: true or false.
null	Yes	value	an intentional absence of any object value.
undefined	Yes	value	variable that has been declared but not assigned a value.
BigInt	Yes	value	large integers with arbitrary precision (greater than the limit of Number).
Symbol	Yes	value	unique and immutable value, often used for object property keys.
Object	Yes	reference	collection of key-value pairs (e.g., objects, arrays, functions).
Array	Yes	reference	type of object used to store ordered collections of data (indexed by numbers).
Function	Yes	reference	block of code designed to perform a specific task.