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

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

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

function titleCase(str) {
  var strToMasUpperCased=str.split(' ').map(
                                            function (val){
                                              
                                              val=val.toLowerCase();
                                              
                                              var valToMas=val.split('');
                                              
                                              valToMas[0]=valToMas[0].toUpperCase();
                                              return valToMas.join('');
                                                           }
                                            ).join(' ');
  return strToMasUpperCased;
}

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