Are You a Concurrent React Pro?

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is the difference between synchronous and concurrent rendering in React 18?

  • Concurrent rendering is slower than synchronous rendering, but it allows for more control over the rendering process.
  • Synchronous rendering is interruptible, while concurrent rendering is not.
  • Concurrent rendering can work on several tasks simultaneously and switch between them based on their priorities, while synchronous rendering cannot. (correct)
  • Synchronous rendering is more memory-efficient than concurrent rendering, but it is less flexible.

What is the purpose of useDeferredValue hook in React 18?

  • It enables the use of the Suspense component in React applications.
  • It allows for the creation of multiple versions of UI in memory.
  • It defers the rendering of low-priority values to optimize performance. (correct)
  • It speeds up the rendering process of slow components.

Why is it necessary to wrap SlowComponent inside memo in the provided example?

  • To create multiple versions of UI in memory.
  • To optimize the performance and avoid blocking the input field. (correct)
  • To enable the use of the Suspense component in React applications.
  • To make the component faster to render.

When will Suspense work in React applications?

<p>When using suspense-enabled frameworks like Next.js. (C)</p> Signup and view all the answers

What happens when you use deferredValue in React applications?

<p>It defers the rendering of low-priority values to optimize performance. (A)</p> Signup and view all the answers

What is JSX in React Native?

<p>A syntax that lets you write elements inside JavaScript (B)</p> Signup and view all the answers

What is the difference between props and state in React Native?

<p>Props let you customize components, while state is a component's personal data storage (C)</p> Signup and view all the answers

What is the purpose of a parent component in React Native?

<p>To render other components (B)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser