Free Building React App Q&A - Get Started with React

We can integrate reactJS in any of the existing web app

False

True

Correct! Wrong!

ReactJS does not need HTML or any of the HTML preprocessor to make UI elements

True

False

Correct! Wrong!

Props can be modified in child component directly like state

False

True

Correct! Wrong!

Is the use of JSX mandatory to develop with React?

Sometimes

Yes

Correct! Wrong!

About lists in React, why should we use "keys"?

Keys help React identify which items have changed.

Keys are not mandatory.

The braces interrupt the information listing flow.

The keys are mandatory to prevent the application from stopping.

Correct! Wrong!

About hooks it is incorrect to say:

Hooks don't work inside classes and allow you to use React without classes.

Hooks work inside classes and allow you to use React without classes.

Hooks are functions that allow you to hook into React's state and lifecycle features from within functional components.

We can create our own hooks.

Correct! Wrong!

What is the result of the expression

const [add, setSum] = useState(0)
setSum(add + 4)
setSum(adding - (1x2))

Correct! Wrong!

FREE Building React App Questions and Answers

We can integrate reactJS in any of the existing web app

ReactJS does not need HTML or any of the HTML preprocessor to make UI elements

Props can be modified in child component directly like state

Is the use of JSX mandatory to develop with React?

About lists in React, why should we use "keys"?

About hooks it is incorrect to say:

What is the result of the expression

const [add, setSum] = useState(0)
setSum(add + 4)
setSum(adding - (1x2))

FREE React Javascript Questions and Answers

FREE Introducing React Hooks Questions and Answers

We can integrate reactJS in any of the existing web app

ReactJS does not need HTML or any of the HTML preprocessor to make UI elements

Props can be modified in child component directly like state

Is the use of JSX mandatory to develop with React?

About lists in React, why should we use "keys"?

About hooks it is incorrect to say:

What is the result of the expression const [add, setSum] = useState(0) setSum(add + 4) setSum(adding - (1x2))

Premium Tests $49/moFREE November-2024

What is the result of the expression

const [add, setSum] = useState(0)
setSum(add + 4)
setSum(adding - (1x2))

Premium Tests $49/mo
FREE November-2024