React Js is a javascript library for frontend developed by Meta . It is used for building interactive user interfaces and single page web-applications with an ease.
In react we create reusable components that are assemble to form an entire application and UI. ****
In React, hooks are functions that allow functional components that helps to manage states
In React, useState is a react hook function that allows us to add state to functional components.
With useState, you can define a state variable and a function to update that variable, and React will automatically re-render the component when the state variable is updated.
In React, the useReducer hook is used for managing state in a more complex way than the useState hook. allows you to define a reducer function that can handle more complex state updates, and provides a way to dispatch actions to the reducer to update the state.
React Components are like a functions that basically returns HTML elements. It is a building block of react application and dividing the code into components so that it can be reuse , making it easier to debug as well.
State is a build-in react object that is used to store data or information in a component. State of a component can be change overtime and whenever it changes, the component rerenders.