Function formatter

08_10e/script.js:7–14

(locale = "en-US", currency = "USD", value)

// Helper function to format currency numbers. Used by tipCalculator
const formatter = (locale = "en-US", currency = "USD", value) => {
  let formattedValue = new Intl.NumberFormat(locale, {
    style: "currency",
    currency: currency,
  }).format(value);

  return formattedValue;
};

// Callback receives finalTip object, creates and outputs table on the DOM.
const printHTML = (finalTip) => {