React.js (A Javascript Framework)
React.js Multiple Choice Questions (MCQ) quizzes are designed to help you assess and enhance your knowledge of React.js, one of the most widely used JavaScript libraries for building user interfaces. By solving these questions, you’ll not only test your understanding of React’s core concepts but also gain confidence in applying them to real-world projects. Whether you’re preparing for exams, interviews, or simply aiming to sharpen your React skills, this quiz will provide a comprehensive learning experience.
Introduction to React.js
React.js is a powerful JavaScript library developed by Facebook for building dynamic and interactive user interfaces, especially single-page applications (SPAs).
Functional vs Class Components, Props
This section will test your understanding of the differences between functional and class components, the pros and cons of each.
State, Lifecycle Methods
This section covers the concepts of local component state, how to manipulate it, and its impact on rendering.
Hooks
Hooks revolutionized the way React applications are built by allowing functional components to manage state and lifecycle events.
Event Handling
This section will help you understand how event handling works in React, including the use of synthetic events, binding event handlers, and managing form inputs.
Forms
Working with forms is a common task in web development, and React provides its own methods for handling form submissions, validation, and state management.
Conditional Rendering
Conditional rendering allows you to render different elements or components based on certain conditions.
Lists and Keys & Importance of Keys
Rendering lists of elements is a common operation in React. You'll explore the performance implications and best practices for using keys in lists.
React Router
React Router is the standard routing library for React applications, enabling navigation between different components without refreshing the page.
Error Handling, Debugging, Optimization
Error handling and debugging are crucial for maintaining the stability and performance of React applications.