Autofill Script Google Spreadsheet Script

Question

I need you to help me out with this. I need a script on my Google Spreadsheet.

I need the script to do exactly what CTRL+A, CTRL+

Answer 1

Something following should work:

  var oneRowCopy = sheet.getRange(1,1,1, sheet.getLastColumn());
  var targetRows = sheet.getRange(2,1,sheet.getLastRow()-1, sheet.getLastColumn());
  oneRowCopy.copyTo(targetRows);