http://www.freecodecamp.com/fcc0208647c 's solution for Bonfire: Title Case a Sentence

bonfire-title-case-a-sentence#.js

// Bonfire: Title Case a Sentence
// Author: @fcc0208647c
// Challenge: http://www.freecodecamp.com/challenges/bonfire-title-case-a-sentence#
// Learn to Code at Free Code Camp (www.freecodecamp.com)

function titleCase(str) {
    arr = str.toLowerCase().split(' ');
    console.log(arr);
    uppers = arr.map(upperWord);
    propercase = uppers.join(' ');
    return propercase;

function upperWord(word) {
    word = word.split('');
    letter = word[0].toUpperCase(); // get final and concat
    final = letter + word.slice(1,word.len).join('');
    return final;
  }
}

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