What are synthetic events in React?

What are pure components in ReactJS

useRef

- return 

How to fetch data from an api

fetch API

- returns a promise

when it resolves the JSON data is returns

you can iterate in through or dump it into the state

- axios

- Tansack Query / React Query

 How to make an Async call

Define the Event Loop

call stack  - methods synchronous execute

timers / promises - asynchronous - goes into the event queue

closure

hydrate