What is the difference between reference and primitive data types types in Javascript?

JavaScript: What is the difference between reference and primitive data types types in Javascript?

There are two main types of data types in JS - reference and primitive. Here is a quick overview of the differences

Reference Data Types

Reference data types are accessed by reference - it is a pointer to a location in memory. Their data is stored on the heap. If it is an object, it is a reference type.

Some of the main references types are:

Object literals, Arrays, Functions, etc

Primitive Data Types

This would be the typical normal way of storing data, by value. It is stored on the stack.

There are 6 main primitive types:

String, Number (there is no real distinction between floats, integers in JS. They are all stored as floats.), Null, Boolean, Undefined and Symbols (since ES6)

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