JS Basics

Question 1

How to create a function in JS?

Answer 1

# 1. first option
let sample = function(name) {
    return name
};

sample(‘Name’) # returns ‘Name’

2. second option

let sample = (name) => {
    return name
}

# 3. third option 
let sample = (name) => (name)

Question 2

How to use .map function?

Answer 2

arr = [1,2,3,4]
arr.map((num) => { return num * 2 })
# => [2, 4, 6, 8]