JSFiddle - React, Tailwind, and code Playground

JavaScript

var amigos = [{name: 'pepe',edad: 52},{name: 'ruben',edad: 22}];

if(!localStorage.amigos){
    localStorage.amigos = JSON.stringify(amigos);
    console.log("no estaba")
}else{console.log("ya estaba")}

var friends = JSON.parse(localStorage.amigos);

console.log(friends)