Main

Question 1

A DOM is a tree of html ____.

Answer 1

Nodes

Question 2

React’s virtual DOM is really just a tree of ______ .

Answer 2

React elements

Question 3

A virtual DOM node is basically an object that stores an element’s ______.

Answer 3

attributes and content

Question 4

ReactDOM syncs the virtual DOM with the real DOM through a process called ____ .

Answer 4

reconciliation

Question 5

The render() function creates ____ .

Answer 5

A tree of React elements

Question 6

The process of comparing the current virtual DOM (tree of React elements) to the previous virtual DOM is called ____ .

Answer 6

diffing

Question 7

React is an ____ JavaScript library created by ____ that is used to build complex, interactive ____ for ____ and ____ applications.

Answer 7

open-sourced
Facebook
web
mobile

Question 8

When compared to the MVC architecture, React is for which part?

Answer 8

V (view)

Question 9

Angular enforces opinions on the overall ____ of an application, whereas React is only concerned with the ____ .

Answer 9

view

Question 10

React uses JSX for building HTML, whereas Angular uses ____ .

Answer 10

templates, an extension of HTML

Question 11

Angular has opinionated dependency injection. Some of these include ____ , ____ , ____ , and ____ . (FRAH)

Answer 11

form handling
routing & navigation
animations
http api

Question 12

React is really a UI library, whereas Angular is a full-featured ____ .

Answer 12

framework

Question 13

One downside to React vs Angular, is that you have to decide which ____ to use for critical features, and you have to manage ____ to them.

Answer 13

library dependencies, updates

Question 14

React has one-way data binding, whereas Angular has ___ data binding.

Answer 14

two-way

Question 15

List the three phases of the component lifecycle.

Answer 15

mounting, updating, un-mounting

Question 16

Hooks are ____ that give you access to ____ and ____ features within ____ components. They are not available in ____ components.

Answer 16

functions
state, lifecycle
functional
class-based

Question 17

One big advantage to using hooks over traditional class-based methods is that they allow you to ____ state and ____ logic between different ____ .

Answer 17

reuse
lifecycle
components

Question 18

Hooks enable developers to avoid the use of two advanced methods of sharing stateful logic between components. These are referred as ____ and ____ .

Answer 18

Higher Order Components

render props