Parse JSON for Bitcoin Price in Words

parseJson.js

function parseJson(json) {
   var time = "on " + json["time"]["updated"];
   var usdValue = json["bpi"]["USD"]["rate"];
   var gbpValue = json["bpi"]["GBP"]["rate"]; // ToDo later
   var euroValue = json["bpi"]["EUR"]["rate"]; // ToDo later

   var usdValueInWords = (numberToWords(usdValue.split(".")[0].replace(",","")) + " dollars").toUpperCase();

   document.getElementById("content").innerHTML = usdValueInWords;
  
   textToSpeech = "Bitcoin price is " + usdValueInWords;

   // we call back in 60 seconds
   setTimeout(bitcoinPrice, 60000);
}