What are JavaScript data types?

JavaScript has 8 data types:

Primitive types:
1. Number - integers and floating-point numbers
2. String - text data
3. Boolean - true/false values
4. Undefined - declared but not assigned
5. Null - intentional absence of value
6. Symbol - unique identifiers (ES6)
7. BigInt - large integers (ES2020)

Non-primitive type:
8. Object - collections of key-value pairs, including arrays, functions, dates, etc.