form data via AJAX

form.onSuccess(function(vals) {
    var visitorId = Intercom("getVisitorId");
    var payload = JSON.stringify({
        anonId: visitorId,
        vals: vals
    });
    // Setup our http client
    var xhttp = new XMLHttpRequest();
    // Add Public Workflow URL from Tray Platform webhook workflow.
    xhttp.open("POST", "TRAY_WEBHOOK_URL", true);
    // Set a few request headers
    xhttp.setRequestHeader("Content-type", "application/json");
    xhttp.setRequestHeader("X-CSRF-Token", "YOUR_TOKEN");
    // Send payload to the Tray Platform, bon voyage!
    xhttp.send(payload);
});