The code below insert timestamp in google sheet by editing another column. However, there an issue which I have no idea how to solve. When I add new row manually, it successfully adds timestamp, BUT I have an html form in my website which sends data to this sheet and even-though new row is added, google don't create a timestamp !!! It's a bit weird since conceptually when a new row is added, means an edit in cell, and google must add timestamp. I would be so grateful if someone help me to solve this issue. Thanks
function onEdit(event)
{
var timezone = "GMT+8:30";
var timestamp_format = "yyyy-MM-dd HH:mm:ss"; // Timestamp Format.
var updateColName = "date";
var timeStampColName = "Date Sent";
var sheet = event.source.getSheetByName('Attendance'); //Name of the sheet where you want to run this script.
var actRng = event.source.getActiveRange();
var editColumn = actRng.getColumn();
var index = actRng.getRowIndex();
var headers = sheet.getRange(1, 1, 1, sheet.getLastColumn()).getValues();
var dateCol = headers[0].indexOf(timeStampColName);
var updateCol = headers[0].indexOf(updateColName); updateCol = updateCol+1;
if (dateCol > -1 && index > 1 && editColumn == updateCol) { // only timestamp if 'Last Updated' header exists, but not in the header row itself!
var cell = sheet.getRange(index, dateCol + 1);
var date = Utilities.formatDate(new Date(), timezone, timestamp_format);
cell.setValue(date);
}
}
