Total 20 question (100 marks)
- 1. React supports all the syntax of _________________.
- 2. Select the programming language NOT used within the ESLintrc file.
- 3. If our elements are dynamic, react can keep track of the changes using keys.
- 4. React component names must begin with an uppercase letter.
- 5. A copy of the 'real' DOM that is kept in memory is called what?
- 6. What type of element will be rendered from the following code? function Hello() { return <h1>Hello reactjs</h1>; } ReactDOM.render(<Hello />, document.getElementById('root'));
- 7. What does the "webpack" command do?
- 8. The RouterHandler object is listed in which React library.
- 9. What if added to a component's style, determines the primary axis of its layout, and if using the
- 10. How can you optimze performance for a function component that always renders the same way?
- 11. Which code statement will set the value of a text box in the child component input field in
- 12. React keeps track of what items have changed, been added, or been removed from a list using ________.
- 13. The state can be initialized when code is loaded or the state can be set on event changes.
- 14. How do you access a function fetch() from a h1 element in JSX?
- 15. How can we prevent default behavior in React? What method you can call?
- 16. What is the children prop?
- 17. Components cannot refer to other components in their output.
- 18. ReactJS uses _____ to increase performance.
- 19. What tool does React use to compile JSX?
- 20. What information is passed to dispatcher after an action is created in Flux, in React?