Google Table - trigger for log timestamp of cell changes

gistfile1.js

/**
* Set updatedAt for Popis column 
* @autor 
* přejmenováno na onEditTrigger a nastaveno přes Zdorje/Spouštěče == zná to i email editora
* @see https://developers.google.com/apps-script/guides/triggers/
*/
function onEdit(e) {

  var range = e.range;
  // column number
  var col = range.getLastColumn();
  // comment all cells now
  if( true || col == 3 || col == 8 || col == 9){
    var email = "";
    try{
      email = Session.getActiveUser().getEmail();
      email = email ? ('/'+email) : '';
    }catch(e){}
    var d = new Date();
    var dStr = d.getFullYear()+""+(d.getMonth()+1)+""+d.getDate()+" "+d.getHours()+":"+d.getMinutes()
    range.setNote(range.getNote() + "\nUpd: " + dStr + email);
  }
}