Example Google Apps Script Form to Tray Webhook

function onFormSubmit(e) {
  
  var responses = [];
  // Replace the form ID var below with whatever your form is. You can get this from the URL like so:
  var form = FormApp.openById('{{ FORM ID }}');
  var formResponses = form.getResponses();
  
  if (e) {

    var lt = formResponses.length - 1
    var itemResponses = formResponses[lt].getItemResponses()
    
    itemResponses.forEach(function(el){
      var item = el.getItem();
      var obj = {
        item_type: "" + item.getType() + "",
        item_title: item.getTitle(),
        response: el.getResponse()
      };
      responses.push(obj);
    });
    
    // Hit "cmd + return" to see a console log of the object being sent to the webhook
    Logger.log(responses);

  } else {
    // This is here just to help test the objects already sent to form for QA.
    // You can remove this or do whatever error handling you want to do when it's live.
    var lt = formResponses.length - 1
    var itemResponses = formResponses[lt].getItemResponses()
    
    itemResponses.forEach(function(el){
      var item = el.getItem();
      var obj = {
        item_type: "" + item.getType() + "",
        item_title: item.getTitle(),
        response: el.getResponse()
      };
      responses.push(obj);
    });
    
    // Hit "cmd + return" to see a console log of the object being sent to the webhook
    Logger.log(responses);
  }
  
  // Put your Tray webhook endpoint here. You get that from the workflow setting dialog (upper left corner under gear icon).
  // ex: https://xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.trayapp.io
  var url = "***Tray webhook url***";
  
  var options = {
        "method": "post",
        "headers": {
            "Content-Type": "application/json"
        },
        "payload": JSON.stringify(responses)
    };
    var response = UrlFetchApp.fetch(url, options); 
}