Submitting form using Google script API method

To submit data using the google.script.run API methods, add onclick property to the Submit button:

<input type="submit" value="SUBMIT" onclick="google.script.run.postFormDataToSheet(this.parentNode);" />
<!-- this.parentNode is the 'form' element -->

Create the postFormDataToSheet function as shown here:

function postFormDataToSheet(e){
  // Replace with your spreadsheet's ID.
  var ss = SpreadsheetApp.openById("spreadsheet's id");

  var SheetResponses = ss.getSheetByName("Responses");

  // Create a 'Responses' sheet if it does not exist.
  if(!SheetResponses){
    SheetResponses = ss.insertSheet("Responses");
  }

  SheetResponses.appendRow([e.places]);
}

To show Form submission result or error message, insert the postData function in a separate <script> tag and add success and failure handlers with a callback function as shown here:

    <script>
      function postData(form){
        google.script.run
          .withSuccessHandler...