Crowdly

Add to Chrome

Universities
softserve.academy
Advanced Frontend with React.js [Eng+Ukr]

Advanced Frontend with React.js [Eng+Ukr]

Looking for Advanced Frontend with React.js [Eng+Ukr] test answers and solutions? Browse our comprehensive collection of verified answers for Advanced Frontend with React.js [Eng+Ukr] at softserve.academy.

Get instant access to accurate answers and detailed explanations for your course questions. Our community-driven platform helps students succeed!

Is the component below defined correctly?

Please, select the correct statements regarding fixes/improvements that can be done with the component.

someProp should be placed in the dependency array

100%

doSomething should be placed in the dependency array

everything is good

it is better to place the doSomething function inside of the effect

100%

it is better to remove the second argument of the effect

View this question

What the dependency array of useCallback should be in the code below?

we should remove the dependency array at all

it should be like this: [addValue]

100%

it should be left empty as it is

it should be like this: [addValue, setCount]

it should be like this: [setCount]

View this question

Please, select what can be passed as a second argument of connect function

mapState function

state

mapDispatch function

100%

dispatch function

an object filled in with action creators

100%

View this question

Will the ErrorBoundary component handle the error in the code below?

No, because error boundary component can handle only issues of children components wrapped with this error boundary component

100%

It will work as if the whole SimpleComponent was wrapped inside of ErrorBoundary

Error that happens in the js does not affect rendering of SimpleComponent. ErrorBoundary is not needed here

Yes, it will handle the jsx inside of it

View this question

Suppose, we have the next code:

What will happen if ComponentA updates value by calling setValue?

value will be updated, ComponentA will not be rerendered

value will not be updated, ComponentA will not be rerendered

value will be updated, ComponentA will be rerendered

100%

error

Infinite loop

value will not be updated, ComponentA will be rerendered

View this question

Which lifecycle method is the best candidate to make requests to the server?

componentDidMount

100%

render

componentWillUmount

constructor

View this question

Which lifecycle method is responsible for unsubscribe from the listener?

componentDidMount

shouldComponentUpdate

componentDidCatch

componentWillUnmount

100%

View this question

Suppose, we have the next code:

What will happen if ComponentA updates value by calling setValue?

value will be updated, ComponentA will not be rerendered

❌

value will not be updated, ComponentA will not be rerendered

❌

value will be updated, ComponentA will be rerendered

✅

error

❌

Infinite loop

❌

value will not be updated, ComponentA will be rerendered

❌

View this question

Will the ErrorBoundary component handle the error in the code below?

No, because error boundary component can handle only issues of children components wrapped with this error boundary component

✅

It will work as if the whole SimpleComponent was wrapped inside of ErrorBoundary

❌

Error that happens in the js does not affect rendering of SimpleComponent. ErrorBoundary is not needed here

❌

Yes, it will handle the jsx inside of it

❌

View this question

Will the error be handled by error boundary?

(given that we are not using react-error-boundary package and ErrorBoundary is the usual error boundary component)

no, because error boundaries do not catch errors in event handlers

✅

yes, because error boundaries catch errors in the components below them in the tree

❌

yes, because error boundaries catch errors in the in the event handlers

❌

No, because the thrown error will not break React component tree

❌

View this question

Want instant access to all verified answers on softserve.academy?

Get Unlimited Answers To Exam Questions - Install Crowdly Extension Now!

Add to Chrome

Telegram Instagram TikTok Question Bank

Add to Chrome