script.ts

const totalPriceInput = document.getElementById("total-price");
const vatPrice = document.getElementById("vat-price");
const priceWithoutVAT = document.getElementById("price-without-vat");
const submitButton = document.getElementById("submit");
const resetButton = document.getElementById("reset");

function calculateVAT(e) {
    e.preventDefault();
    const vatPercent = document.getElementById("vat-percent").value;
    const totalPrice = parseFloat(totalPriceInput.value);
    if (!totalPrice) {
        alert("Please enter a valid total price");
        return;
    }
    const vatRate = parseFloat(vatPercent);
    const vat = totalPrice * vatRate;
    const priceWithoutVat = totalPrice - vat;
    vatPrice.value = vat.toFixed(2);
    priceWithoutVAT.value = priceWithoutVat.toFixed(2);
}

submitButton.addEventListener("click", calculateVAT);

resetButton.addEventListener("click", function() {
  totalPriceInput.value = '';
  vatPrice.value = '';
  priceWithoutVAT.value = '';
  document.getElementById("vat-percent").value = 0.06;
});