How to receive ajax data and store it in a Google spreadsheet

ajaxspreadsheet.js

// Follow the instructions here: http://mashe.hawksey.info/2014/07/google-sheets-as-a-database-insert-with-apps-script-using-postget-methods-with-ajax-example/
//
// That'll get you 80% of the way there. Unfortunately, you'll run into CORS and MIMETYPE errors, so make the following changes.


//  ============================================================
// Your clientside script should actually look like this (jquery example):
//  ============================================================

var data = {email: "email@address.com"}

$.ajax({
  url: "https://script.google.com/macros/YOUR_SCRIPT_URL/exec",
  type: "POST",
  data: data,
  contentType: "application/javascript",
  dataType: 'jsonp'
})
.done(function(res) {
  console.log('success')
})
.fail(function(e) {
  console.log("error")
});

window.receipt = function(res) {
  // this function will execute upon finish
}


//  ============================================================
//  Your Code.gs file should actually look like this:
//  ============================================================


// Usage
//  1. Enter sheet name where data is to be written below
        var SHEET_NAME = "Sheet1";
        
//  2. Run > setup
//
//  3. Publish > Deploy as web app 
//    - enter Project Version name and click 'Save New Version' 
//    - set security level and enable service (most likely execute as 'me' and access 'anyone, even anonymously) 
//
//  4. Copy the 'Current web app URL' and post this in your form/script action 
//
//  5. Insert column names on your destination sheet matching the parameter names of the data you are passing in (exactly matching case)

var SCRIPT_PROP = PropertiesService.getScriptProperties(); // new property service

// If you don't want to expose either GET or POST methods you can comment out the appropriate function
function doGet(e){
  return handleResponse(e);
}

function doPost(e){
  return handleResponse(e);
}

function handleResponse(e) {
  // shortly after my original solution Google announced the LockService[1]
  // this prevents concurrent access overwritting data
  // [1] http://googleappsdeveloper.blogspot.co.uk/2011/10/concurrency-and-google-apps-script.html
  // we want a public lock, one that locks for all invocations
  var lock = LockService.getPublicLock();
  lock.waitLock(30000);  // wait 30 seconds before conceding defeat.
  
  try {
    // next set where we write the data - you could write to multiple/alternate destinations
    var doc = SpreadsheetApp.openById(SCRIPT_PROP.getProperty("key"));
    var sheet = doc.getSheetByName(SHEET_NAME);
    
    // we'll assume header is in row 1 but you can override with header_row in GET/POST data
    var headRow = e.parameter.header_row || 1;
    var headers = sheet.getRange(1, 1, 1, sheet.getLastColumn()).getValues()[0];
    var nextRow = sheet.getLastRow()+1; // get next row
    var row = []; 
    // loop through the header columns
    for (i in headers){
      if (headers[i] == "Timestamp"){ // special case if you include a 'Timestamp' column
        row.push(new Date());
      } else { // else use header name to get data
        row.push(e.parameter[headers[i]]);
      }
    }
    // more efficient to set values as [][] array than individually
    sheet.getRange(nextRow, 1, 1, row.length).setValues([row]);
    // return json success results
    return ContentService
    .createTextOutput("receipt({success: true, note: " + nextRow + "})")
          .setMimeType(ContentService.MimeType.JAVASCRIPT);
  } catch(e){
    // if error return this
    return ContentService
    .createTextOutput("receipt({success: false, note: " + e + "})")
          .setMimeType(ContentService.MimeType.JAVASCRIPT);
  } finally { //release lock
    lock.releaseLock();
  }
}

function setup() {
    var doc = SpreadsheetApp.getActiveSpreadsheet();
    SCRIPT_PROP.setProperty("key", doc.getId());
}