Codecademy export

main.js

let input = 'I just keep moving forward.';
const vowels = ['a', 'e', 'i', 'o', 'u'];
let resultArray = [];

for (let i = 0; i < input.length; i++) {
  // console.log(i);
  for (j = 0; j < vowels.length; j++) {
    // console.log(j);
    if (input[i] === vowels[j]) {
      resultArray.push(vowels[j].toUpperCase());
    }
  }
  if (input[i] === 'e' || input[i] === 'u') {
    resultArray.push(input[i].toUpperCase());
  }
}

console.log(resultArray.join(''));