What are the rules of Hooks?
The rules of Hooks are:
- Only Call Hooks at the Top Level: Don’t call Hooks inside loops, conditions, or nested functions. Always use Hooks at the top level of your functional components or other custom Hooks.
- Only Call Hooks from React Functions: Ensure that you only call Hooks from within React functional components or custom Hooks. Don’t call Hooks from regular JavaScript functions.
These rules are crucial for ensuring that React can properly track the state of hooks and manage their lifecycles correctly. Violating these rules can lead to unexpected behavior and bugs in your application.
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.