Generate URL dynamically in JS

GenerateURL.js

const generateURL = (data = {}) => {
  const domain = 'http://testurl.bitfinix.com';
  let queryString = '';
  
  for (const key in data) {
    if (data[key])
        queryString += `${key}=${data[key]}&`;
  }
  return `${domain}/${queryString ? '?' + queryString.slice(0, -1) : ''}`;
}