22 - React and Spring Boot: Introduction of React Hooks, How to use useState and useEffect in React?

#ReactHooks #useEffect #useState
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What are React Hooks?
Hooks are a new addition in React 16.8, Hooks let us use state and other React features without writing a class.
Hooks are functions that you hook into React state and lifecycle features from function components.
If you are writing a function component and then you want to add some state to it, previously you do this by converting it to a class component. but now you can do it by using the Hook inside the function component with the help of useState.
Hooks doesn’t work inside the class component.

#useState
The State hook, We call it inside a function component to add some local state to it.

#useEffect
The Effect hook, adds the ability to perform side effects from a function component.
The Effect hook, serves the same purpose as #componentDidMount, #componentDidUpdate, #componentWillUnmount in React classes, but unified into a single API.

Other type of hooks
#useContext, #useReducer, #useCallback, #useMemo, #useRef, #useImperativeHandle, #useLayoutEffect, #useDebugValue

[OptimistRealist]

Best of the best! When will you release the next video? It's too useful!

[OptimistRealist]

Hello Bro, we are waiting for the next video!!!

[RENEGVDE]

Waiting for registration! And maybe also show how to implement Testing for Spring Boot ?

[pavithramadhushini]

Can you describe the register function? It doesn't work