capitalize

1const capitalize = s => {
2  s = s.split('')
3  let finalArr = []
4  let i = 0
5  while(i < 2){
6    let str = ''
7    s.forEach((letter, index) => {
8      if(i % 2 === 0 && index % 2 === 0) str += letter.toUpperCase()
9      else if(i % 2 !== 0 && index % 2 !== 0) str += letter.toUpperCase()
10      else str += letter
11    })
12      
13    finalArr.push(str)
14    i++
15  }
16  return finalArr
17};
18console.log(capitalize("abcdef"))

1function capitalize1(str) {
2  const arrOfWords = str.split(" ");
3  const arrOfWordsCased = [];
4
5  for (let i = 0; i < arrOfWords.length; i++) {
6    const word = arrOfWords[i];
7    arrOfWordsCased.push(word[0].toUpperCase() + word.slice(1).toLowerCase());
8  }
9
10  return arrOfWordsCased.join(" ");
11}