tv_widget.js

function getWidgetURL(options) {
  const url = new URL("https://s.tradingview.com/widgetembed/");
  const defaultOptions = {
    symbol: "BTCUSD",
    interval: 60,
    hidesidetoolbar: 0,
    symboledit: 1,
    saveimage: 1,
    toolbarbg: "f1f3f6",
    theme: "Light",
    style: 1,
    timezone: "America/New_York",
    locale: "en"
  };
  const finalOptions = Object.assign({}, defaultOptions, options);
  for (let key in finalOptions) {
    url.searchParams.set(key, finalOptions[key]);
  }
  return url.href;
}