Shuffle an array's contents

array-shuffle.js

function shuffle(array) {
  const shuffledArray = [];
  for (let i = 0; shuffledArray.length !== array.length; i++) {
    const randomIndex = Math.floor(Math.random() * array.length);
    if (!shuffledArray.includes(array[randomIndex])) {
      shuffledArray.push(array[randomIndex]);
    }
  }
  return shuffledArray;
}