Title Case a Sentence again

Tell us what’s happening:
I’m really stuck on this one. I don’t know how to target the first letter of each word. Please point me in the right direction

Your code so far

function titleCase(str) {
  var arr = [];
  //split string into array of separate words, convert to lower case
  var broken = str.toLowerCase().split(" "); 
  //use for loop to iterate through each word in array
  for (var i = 0; i < broken.length; i++) {
  //replace first letter of each word with its uppercase equivalent
    var re = broken[i].charAt(0);
    arr.push(broken[i].replace(re , function() {
      return re.toUpperCase;
 return arr; 

titleCase("I'm a little tea pot");

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Link to the challenge:

It’s ok I figured it out. Just had to convince my self I was smart enough to figure it out and keep working the angles. Previous threads on the same topic also helped.