react-function-components

Question 1

What is a React component?

Answer 1

A function or a class the returns React elements. Reusable. Used for a chunk of UI.

Question 2

How do you define a function component in React?

Answer 2

By creating a function with a capital first letter that returns a React DOM element. In the return it is HTML that is converted to a React DOM element.

Question 3

How do you mount a component to the DOM?

Answer 3

1. Query the page for root
2. Call createRoot on ReactDOM object and give it the queried root
3. Call render on root object and give it a component