JSFiddle - React, Tailwind, and code Playground

by Matheus Castiglioni

HTML

<button id="calcular">
  Calcular
</button>

JavaScript

$.ajax({
	url: 'https://www.mocky.io/v2/5d8aa3a23500001100d46a0f',
  dataType: 'json'
}).done(data => {
	console.log('Requisição terminou')
	localStorage.setItem('RETORNO', JSON.stringify(data.result))
})

$('#calcular').click(() => {
	const numeros = JSON.parse(localStorage.getItem('RETORNO'))
  const soma = numeros.reduce((acc, numero) => {
  	acc += numero
    return acc
  }, 0)
	$(document.body).append(`<h1>${soma}</h1>`)
})