Return the provided string with the first letter of each word capitalized.

title_case.js

function titleCase(str) {
  var strArray = str.toLowerCase().split(' ');
    for (var i = 0; i < strArray.length; i++) {
      strArray[i] = strArray[i][0].toUpperCase() + strArray[i].slice(1);
    }
  
  return strArray.join(' ');
}

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