In javascript the Primitive values are data that are stored on the stack . And the Reference values are objects that are stored in the heap .

Where are primitives stored?

Stack memory stores primitive types and the addresses of objects. The object values are stored in heap memory.

Are there primitives in JavaScript?

In JavaScript, a primitive (primitive value, primitive data type) is data that is not an object and has no methods. There are 7 primitive data types: string, number, bigint, boolean, undefined, symbol, and null. ... All primitives are immutable, i.e., they cannot be altered.