Split UpperCase Javascript

 <script>

function solution(string) {

    let splitStr = string.split("");

    let newStr = string.split("");

    let capStr = string.toUpperCase().split("");

    console.log(capStr);

    for (i = splitStr.length - 1; i >= 0; i--) {

      if (splitStr[i] === capStr[i]) {

        newStr.splice(i, 0, ' ');

      }

    }

    return newStr.join("");

  }

  console.log('camelCasing: ', solution('camelCasing'));

  console.log('camelCasingTest: ', solution('camelCasingTest'));

</script>