Google script to fetch stock quote data from Yahoo Finance

YahooFinance.js

*
   Author: Ky-Anh Huynh
   Original script: https://gist.github.com/mikaelz/11b956c3d2e078105a19dd9df70dbf27
   Usage:
     ticker : Your ticker name, eg. ETH-EUR
     token  : A random string otherwise yahoo output may be a bit messy
              You should have random token on each call!
*/
function MyYahooTicker(ticker,token) {
  var ticker = ticker || "SXR8.DE";
  var token = token || "secure-random-string";
  ticker = encodeURI(ticker);
  var response = UrlFetchApp.fetch("https://query2.finance.yahoo.com/v10/finance/quoteSummary/" + ticker + "?modules=price,summaryDetail&hello=" + token);
  var chain = JSON.parse(response.getContentText());
  return parseFloat(chain.quoteSummary.result[0].price.regularMarketPrice.raw);
}