GenerateURl.js

const generateURL = (params) => {
  const BASE_URL = "http://testurl.bitfinx.com/";
  const generatedURL = new URL(BASE_URL);

  Object.keys(params).map((key) => {
    params[key] &&
      params[key].toString().length > 0 &&
      generatedURL.searchParams.append(key, params[key]);
    return true;
  });

  return generatedURL.href;
};

const _params = {
  width: 300,
  height: 360,
  locale: "en",
  toolbar_bg: "red",
  interval: "3h",
  pair: "BTC_USD",
};

const _URL = generateURL(_params);
console.log("URL is::", _URL);