Google apps script AppendRow to the top

Question

As I know

appendRow(rowContents) add values to the bottom of the spreadsheet But how to add data from form in multiple rows in top of spreadsheet?

Answer 1

There's no single function to do this, but it's not that difficult write one. Here's an example:

function prependRow(sheet, rowData) {
  sheet.insertRowBefore(1).getRange(1, 1, 1, rowData.length).setValues([rowData]);
}

I would actually allow for an optional index, let's say we want to insert after the 2nd row, skipping the header.

function insertRow(sheet, rowData, optIndex) {
  var index = optIndex || 1;
  sheet.insertRowBefore(index).getRange(index, 1, 1, rowData.length).setValues([rowData]);
}

But appendRow also has another interesting characteristic, it's concurrent-safe. Which means it can be triggered multiple times in parallel and won't mess up. To make our function concurrent safe you have to lock it, like this:

function insertRow(sheet, rowData, optIndex) {
  var lock = LockService.getScriptLock();
  lock.waitLock(30000);
  try { 
    var index = optIndex || 1;
    sheet.insertRowBefore(index).getRange(index, 1, 1, rowData.length).setValues([rowData]);
    SpreadsheetApp.flush();
  } finally {
    lock.releaseLock();
  }
}

Then, to use it in your code just call..

function getValuesFromForm(form){
  //...
  insertRow(sheet, [order,lastName,firstName]); //could have passed an extra `2` parameter to skip a one line header
}