ReactJs Introduce and basic
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Total 20 question (100 marks)
1. What is ReactJS?
2. What characterizes the React Router?
3. Everything in React is a _____________.
4. What does the "webpack" command do?
5. What does React have no opinion on?
6. React is mainly for building _____________.
7. What is not a benefit of unidirectional data flow?
8. Lifecycle methods are mainly used ___________.
9. How do you fix the syntax error that results from running this code? const person =(firstName, lastName) => { first:
10. What is Babel?
11. React considers everything as _______.
12. If you see the following import in a file, what is being used for state management in the
13. How do you access a function fetch() from a h1 element in JSX?
14. JSX is typesafe?
15. React supports all the syntax of _________________.
16. Who is developed React.js?
17. What is characterizes in the virtual DOM?
18. Which of the following API is a MUST for every ReactJS component?
19. ReactJS uses _____ to increase performance.
20. What are the limitations of ReactJS?
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