reverseWords.js

let reverseWords = (myWord, cb) => {
 let reverseWords = '';
 let strArray = myWord.split(" ");

 strArray.forEach(currentString => {
 let stringLength = currentString.length;
 for (let i=stringLength-1; i>=0; i--) {
 reverseWords += currentString[i];
 }
 if (strArray.indexOf(currentString) != strArray.length-1) {
 reverseWords += ' ';
 }
 });

 return cb(null, reverseWords);
};

reverseWords('This is a string of words.', (err, reverseWords) => {
 if (err) {

 } else {
 console.log(reverseWords);
 }
});