JSFiddle - React, Tailwind, and code Playground

by janjarfalk

JavaScript

const users = [{
	name: 'Jan Jansson',
    age: 20,
},{
	name: 'Peter Petterson',
    age: 30,
},{
	name: 'Lars Larsson',
    age: 40,
},{
	name: 'Erik Ericzon',
    age: 50,
}];

const editedUsers = users.map(function(user){
    const name = user.name.split(' ');
	user.firstName = name[0];
    user.lastName = name[1];
    return user;
});

const numbers = [4,9,100];
const squaredNumbers = numbers.map(Math.sqrt);

const avgAge = users.reduce(function(memo, item, index, collection){
	return memo + item.age/collection.length;
},0);

console.log(editedUsers);