React Development Skill Assessment

Written by Coursera • Updated on

Test your React skills with this quick assessment. Answer 10 multiple-choice questions to get your score, then check the Scoring Guide to find your level and recommended learning path.

React Skill Assessment

React Programming Quiz

1. What is the difference between state and props?

No difference
Props are read-only and passed from parent, state can be changed internally
State is for styling only
Props are faster than state

2. What is the purpose of the useEffect hook?

To style components
To perform side effects in function components
To create new components
To handle events

3. What's the correct way to update state in React?

const [count, setCount] = useState(0);
count = count + 1
setCount(prevCount => prevCount + 1)
count += 1
useEffect(() => count + 1)

4. What is the Virtual DOM?

A browser feature
A lightweight copy of the DOM that React uses for performance optimization
A database
A styling framework

5. What is a controlled component?

A component with error boundaries
A form element whose value is controlled by React state
A component without props
A cached component

6. What is the purpose of React.memo?

To create memoized values
To prevent unnecessary re-renders of functional components
To store data
To handle memory leaks

7. What is the Context API used for?

API calls
Passing data through the component tree without props drilling
Component styling
Error handling

8. Which hook would you use to memoize an expensive calculation?

useEffect
useMemo
useCallback
useState

9. What is a custom hook?

A built-in React hook
A function that starts with 'use' and may call other hooks
A JavaScript function
A component feature

10. What is the purpose of React Suspense?

To handle errors
To handle loading states and lazy loading
To suspend components
To optimize performance

Scoring Guide & Course Recommendations

0-30 Correct: Beginner Level

  • Skill Level: New to React

  • Recommended Coursera Courses:

    1. React Basics by Meta

      • React fundamentals

      • Components and props

      • State and events

40-70 Correct: Intermediate Level

  • Skill Level: Familiar with basics, ready for advanced concepts

  • Recommended Coursera Courses:

    1. Advanced Reactby Meta

      • Hooks in depth

      • Context API

      • Performance optimization

    2. Developing Front-End Apps with React by IBM

      • Development of interactive user interfaces

      • Application of advanced react features

80-100 Correct: Advanced Level

Skills Covered by Level

Beginner Level

  • JSX syntax

  • Components and props

  • State and lifecycle

  • Event handling

  • Basic hooks

  • Basic routing

Intermediate Level

  • Advanced hooks

  • Context API

  • Performance optimization

  • State management

  • API integration

  • Forms and validation

Advanced Level

  • Design patterns

  • Testing strategies

  • Server-side rendering

  • Advanced state management

  • Performance optimization

  • Micro-frontends

Career Paths

Key Technologies to Learn

  • React

  • Redux/Context API

  • React Router

  • Next.js

  • Testing (Jest, React Testing Library)

  • TypeScript

Updated on
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