React

Question 1

Functional component

Answer 1

Functional components are pure functions that do not hold internal state. They accept props as input and return JSX (representing a piece of UI)

Question 2

React hooks

Answer 2

Let you maintain state and side effects in functional components

Question 3

Class component

Answer 3

Unlike functional components, allow you to use stateful logic and lifecycle methods (for side effects). With hooks, no longer require class components if you want to use state and side effects now.

Question 4

Side effects

Answer 4

TBD

Question 5

State

Answer 5

TBD

Question 6

Props

Answer 6

A way of passing attributes to a React component

Question 7

Constructor function

Answer 7

TBD

Question 8

What is an Expression?

Answer 8

Anything that evaluates to a value. Eg 1 + 1. An expression is often the thing to the right of ‘=’

Question 9

JSX

Answer 9

JSX is syntactic sugar for the ‘React.createElement()’ function call. React.createElement(Element, { attributes, eg. props })