const add = (a, b) => a + b;
const counter = {
  value: 23,
  inc: function () {
    this.value + 1;
  },
};
const greet = () => {
  console.log("Hey David");
};

// const btnGreet = document.getElementById("greet");
// btnGreet.addEventListener("click", greet);

// eine Funktion, die eine Funktion zurück gibt
const count = function () {
  let counter = 0;
  return function () {
    console.log("TEST");
  };
};
count()();

const oneWord = function (str) {
  return str.replace(/ /g, "").toLowerCase();
};

const upperFirstWord = function (str) {
  const [firstWord, ...others] = str.split(" ");
  return [firstWord.toUpperCase(), ...others].join(" ");
};

// Higher-order function
const transformer = function (str, fn) {
  console.log(`Original string: ${str}`);
  console.log(`Transformed string: ${fn(str)}`);
  console.log(`Transformed by: ${fn.name}`);
};

transformer("JavaScript is the best", upperFirstWord);
transformer("JavaScript is the best", oneWord);