Google script to fetch stock quote data from Yahoo Finance

YahooFinance.js

function YahooFinance(ticker) {
  var ticker = ticker || "GOOG";
  ticker = encodeURI(ticker);
  var response = UrlFetchApp.fetch("https://query2.finance.yahoo.com/v7/finance/options/" + ticker);
  var chain = JSON.parse(response.getContentText());
  
  return parseFloat(chain.optionChain.result[0].quote.regularMarketPrice);
}