Custom data types in js

Question

Is it possible to create your own data type in js and store them in a variable?
For example,
const component = "<h1>Hello World</h1>"
The variable above is possible as it's storing a string but what if I wanna do something like,
const component = <h1>Hello World</h1>
Is it possible? How can I do that?

Answer 1

The short answer is No. javascript only provide the class method to create new data types.

const component = new ClassName()

you cannot create another primitive types

Answer 2

Yes, it's possible to create your own data types in JavaScript using object-oriented programming principles and you have to achieve this is by creating custom objects or classes.

About the example you mentioned, to achieve this outside of a React environment, you would typically need to transpile the JSX syntax into regular JavaScript. However, you can create a simple function that mimics JSX behavior by returning DOM elements created with JavaScript. JSX is a syntax extension for JavaScript often used with React to describe what the UI should look like.

Answer 3

Got it, thanks ^^