Top 30 React Interview Questions and Concepts

By freeCodeCamp.org
Published: Sep 12, 2022

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Prepare for a React interview or improve your React skills by learning about 30 common React JS interview questions and concepts.

Nishant Singh developed this course. Check out his channel: https://www.youtube.com/c/Cybernatico…

Course Contents
• (0:00:00) Introduction
• (0:00:43) Map and Filter
• (0:20:06) States in React
• (0:33:33) Props in React
• (0:40:34) Inline Conditional Expressions
• (0:52:04) Event Handling in React
• (0:57:41) Keys in React
• (1:03:25) Forms in React
• (1:18:04) Dynamic Inputs in React
• (1:26:02) CSS Styling in React
• (1:36:47) Uncontrolled v/s Controlled Components
• (1:44:10) Virtual DOM
• (1:46:05) InnerHTML in React
• (1:55:23) React Fragments
• (2:00:02) Stateless v/s Stateful Components
• (2:01:57) REST API Requests
• (2:27:05) Debouncing in React
• (2:38:43) Context API in React
• (2:49:33) Class v/s ClassNames in React
• (2:52:59) Higher Order Components
• (3:06:18) Lazy Loading in React
• (3:14:34) Helper Functions in React
• (3:24:21) Implementing Recursion in React
• (3:27:10) Running Arrays of Functions
• (3:33:08) Custom Hooks in React
• (3:37:22) Promises and Async/Await
• (3:51:52) Code Splitting in React(Dynamic Imports)
• (3:58:18) Creating a Search Filter in React
• (4:13:10) Adding TypeScript to React
• (4:16:36) React Testing Library
• (4:30:41) Caching an API Response

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