Example implementation of basic algorithm to reverse the characters of words in a sentence and return it as a string

quickSwap

var exampleString = "This is an example String";
var words = parseWords(exampleString);
var reversedWords = [];
var finishedString = '';


for(var i = 0; i < words.length; i++){
  // Reverse each word and push it into the final list
    reversedWords.push(quickSwap(words[i]));
}

finishedString = reversedWords.join(' ');
console.log(finishedString);

function quickSwap (word) {
  var i = 0, j = word.length - 1,
      charArray = word.split('');
  
  while (i < j) {
    
    swap(charArray, i, j);
     i++;
     j--;
    
  }

  return charArray.join('');
  
}
function swap(items, first, second) {
  var temp = items[second];
  items[second] = items[first];
  items[first] = temp;
}
function parseWords (sentence){
  var _sentence = sentence,
      words = [];
  // Minimal check to see if this string contains space characters indicating a sentence
  if (_sentence.indexOf(' ') !== -1) {
    
    words = _sentence.split(' ');
    
   
  }
  return words;
  
}