Total 20 question (100 marks)
- 1. A copy of the 'real' DOM that is kept in memory is called what?
- 2. How do you handle passing through the component tree without having to pass props down manually at every
- 3. Which prop type in a React form component, will validate a value for an attribute is passed and
- 4. Which of the following needs to be updated to achieve dynamic UI updates?
- 5. What is a common use case for ref?
- 6. React merges the object you provide into the current state using __________
- 7. Which of the following is NOT a rule for React Hooks?
- 8. Although React Hooks generally replace class components, there are no plans to remove classes from React.
- 9. Keys are given to a list of elements in react. These keys should be:
- 10. We can go for keys when there is a possibility that our user could change the data.
- 11. Which prop takes a function to be called when the text is submitted for TextInput component, in React?
- 12. Props are __________ into other components
- 13. What will happen if you render an input element with disabled = {false}?
- 14. ref is used to refer a element / component returned by _______________.
- 15. How can you access the state of a component from inside of a member function?
- 16. Why should you avoid copying the values of props into a component's state?
- 17. An altered component may be uniquely identified with the help of ref.
- 18. The state can be initialized when code is loaded or the state can be set on event changes.
- 19. What happens when you call setState() inside render() method?
- 20. In React state can be accessed using ________.