JavaScript: Read UTM parameters from the URL

function readUTMParams() {
  const queryString = window.location.search;
  const urlParams = new URLSearchParams(queryString);
  const utmParams = {};
  const utmPrefix = "utm_";

  for (const param of urlParams.entries()) {
    if (param[0].startsWith(utmPrefix)) {
      utmParams[param[0]] = param[1];
    }
  }

  return utmParams;
}

// Read utm params
const utmParams = readUTMParams();
console.log(utmParams);