Tealium Extension - capitalize first letter of each word in string

wordCap.js

// b.channel = b.channel  // The data layer value goes here.  Should look like: one two three.
channelSplit = b.channel.split(" ");

for (i = 0; i < channelSplit.length; i++) {
  channelSplit[i] = channelSplit[i].substring(0,1).toUpperCase() + channelSplit[i].substring(1,channelSplit[i].length);
}

b.channel = channelSplit.join(" ");  // Change sectionName to the data layer variable.  should look like: One Two Three.