JavaScript Functions

Question 1

What are functions?

Answer 1

Reusable blocks of code

Question 2

Write an example of a function declaration

Answer 2

function greetWorld() {
    console.log('Hello, World!);
}

Question 3

Write an example of a function expression

Answer 3

const calculateArea = function(width, height) {
    const area = width * height;
    return area;
};

Question 4

Write an example of an arrow function

Answer 4

const calculateArea = (width, height) => {
    const area = width * height;
    return area;
};

Question 5

Using arrow notation, write an example of a function with a single-line block of code and multi-line block of code

Answer 5

Single-Line Block
const sumNumbers = number => number + number;

Multi-Line Block
const sumNumbers = number => {
    const sum = number + number;
    return sum;
};