What are the basic built-in React Hooks?
The basic built-in React Hooks are useState, useEffect, useContext, useReducer, useCallback, useMomo, useRef and useImperativeHandle.
- useState enables components to manage and update their own state without using classes.
- useEffect is used to connect component to an external system.
- useContext
it is
used to consume data from a Context in a functional component. - useReducer is used to manage complex state logic through a reducer function.
- useCallback used to memoize functions, preventing unnecessary re-renders in child components.
- useMemo is used to memoize the result of a function computation, preventing unnecessary recalculations.
- useRef is used to create mutable references that persist across renders in functional components.
- useImperativeHandler customizes the instance value that is exposed when using
ref
with functional components.
Top React Hooks Interview Questions & Answers
In this article, you will learn React Hooks interview questions and answers that are most frequently asked in interviews. Before proceeding to learn React Hooks interview questions and answers, first learn the complete React Hooks.
React hooks are functions that enable functional components to use state and lifecycle features that were previously only available in class components. Hooks provide functions like useState, useEffect, useContext, etc., that allow you to “hook into” React features from functional components.