ReactJs in Easy level
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Total 20 question (100 marks)
1. Which of the following, is the correct option in React, for retrieval of data from a dynamic component?
2. What if added to a component's style, determines the primary axis of its layout, and if using the
3. Components cannot refer to other components in their output.
4. Which code statement will set the value of a text box in the child component input field in
5. Everything in React is a _____________.
6. React supports all the syntax of _________________.
7. Why should you avoid copying the values of props into a component's state?
8. What is not a benefit of unidirectional data flow?
9. What is the smallest building block of ReactJS?
10. What information is passed to dispatcher after an action is created in Flux, in React?
11. How can you optimze performance for a function component that always renders the same way?
12. If our elements are dynamic, react can keep track of the changes using keys.
13. Which method in a React Component should you override to stop the component from updating?
14. What happens when the following render() method executes? render(){ let langs = ["Ruby","ES6","Scala"] return (<div>
15. ReactJS uses _____ to increase performance.
16. What props will be available to the following component? <Hello {...props} />
17. The state can be initialized when code is loaded or the state can be set on event changes.
18. Select the command to install gulp-connect locally.
19. What is Babel?
20. In React state can be accessed using ________.
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