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React Hooks
FREE Building React App Questions and Answers
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We can integrate reactJS in any of the existing web app
True
False
Correct!
Wrong!
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ReactJS does not need HTML or any of the HTML preprocessor to make UI elements
True
False
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Wrong!
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Props can be modified in child component directly like state
True
False
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Wrong!
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About hooks it is incorrect to say:
Hooks are functions that allow you to hook into React's state and lifecycle features from within functional components.
Hooks work inside classes and allow you to use React without classes.
We can create our own hooks.
Hooks don't work inside classes and allow you to use React without classes.
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Wrong!
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What is the result of the expression
const [add, setSum] = useState(0)
setSum(add + 4)
setSum(adding - (1x2))
2
4
3
6
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Wrong!
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Is the use of JSX mandatory to develop with React?
Yes
No
Sometimes
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About lists in React, why should we use "keys"?
The braces interrupt the information listing flow.
Keys help React identify which items have changed.
Keys are not mandatory.
The keys are mandatory to prevent the application from stopping.
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