script.js

const form = document.querySelector('#form-habits')
const nlwSetup = new NLWSetup(form)
const button = document.querySelector('header button')

button.addEventListener('click', add)
form.addEventListener("change", save)

function add() {
  const today = new Date().toLocaleDateString('pt-br').slice(0,-5)
  const dayExists = nlwSetup.dayExists(today)

  if (dayExists) {
    alert("Dia já incluso 🔴")
    return
 }  
  
  alert('Adicionado com sucesso❇️')
  nlwSetup.addDay(today)
   
}
function save() {
    localStorage.setItem('NLWSetup@habits', JSON.stringify
    (nlwSetup.data))
}

const data = JSON.parse(localStorage.getItem("NLWSetup@habits")) || {}
nlwSetup.setData(data)
nlwSetup.load()