Big Picture

Question 1

What is a benefit of React’s JavaScript-centric approach?

Answer 1

You use plain JavaScript for looping and conditionals.

Question 2

What company open-sourced React?

Answer 2

Facebook

Question 3

What is JSX?

Answer 3

An HTML-like language that compiles to JavaScript.

Question 4

What’s one way that JSX and HTML differ?

Answer 4

JSX uses className instead of class.

Question 5

Why do you have to worry about version conflicts in React, but not need to with native web components?

Answer 5

React has a runtime, web components don’t.

Question 6

What is a benefit of React’s single file approach?

Answer 6

You can read, understand, and work with each autonomous file in isolation.

Question 7

What is ReactJS?

Answer 7

A UI-JavaScript library

Question 8

What is the benefit of React’s virtual DOM?

Answer 8

It improves performance by minimizing DOM changes.

Question 9

What is a benefit of React’s library ?proach

Answer 9

It’s light-weight and configurable