XMLHttpRequest: setAttributionReporting() method

setAttributionReporting(options)

const attributionReporting = {
  eventSourceEligible: true,
  triggerEligible: false,
};

function triggerSourceInteraction() {
  const req = new XMLHttpRequest();
  req.open("GET", "https://shop.example/endpoint");
  // Check availability of setAttributionReporting() before calling
  if (typeof req.setAttributionReporting === "function") {
    req.setAttributionReporting(attributionReporting);
    req.send();
  } else {
    throw new Error("Attribution reporting not available");
    // Include recovery code here as appropriate
  }
}

// Associate the interaction trigger with whatever
// element and event makes sense for your code
elem.addEventListener("click", triggerSourceInteraction);