Primitive Values, Objects and References in JavaScript Made Simple

Primitive Values, Objects and References in JavaScript Made Simple

Primitive data types, values, objects and references in JavaScript are hard topics. You will learn about primitive data types, values, objects, references, the differences between them, how they work and how made it simple.

In JavaScript, there are the two categories of data types you can work with. The first category are primitive data types. At this moment, there exist [seven primitive types]. These primitive data types are number, string, boolean, nullundefined, BigInt and Symbol. The BigInt and Symbol are newer data types.

Symbol was introduced in ES6 specification. The BigInt was introduced later, in ES2020 specification. When something is not one of these primitive data types it is technically an object. This applies to actual objects as well as arrays and even functions. From the view of JavaScript, these are all objects.

This distinction between primitive data types and objects is important because JavaScript handles each differently.


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