Google Apps Script入門
複数のシートを扱う

function sample14_1() {
  var ash = SpreadsheetApp.getActiveSpreadsheet()
  var sheet = ash.getSheetByName("シート2")
  sheet.getRange(1, 1).setValue("やあ")
}

function sample14_2() {
  var ash = SpreadsheetApp.getActiveSpreadsheet()
  var sheet = ash.getSheets()[1]
  sheet.getRange(2, 1).setValue("ども")
}

function sample14_3() {
  var ash = SpreadsheetApp.getActiveSpreadsheet()
  var sheets = ash.getSheets()
  sheets[1].getRange(3, 1).setValue("はい")
}

function sample14_4() {
  var ash = SpreadsheetApp.getActiveSpreadsheet()
  var i = ash.getSheets().length
  Browser.msgBox(i)
}

function sample14_5() {
  var ash = SpreadsheetApp.getActiveSpreadsheet()
  var sheets = ash.getSheets()
  for (i = 0; i < ash.getSheets().length; i++) {
    sheets[i].getRange(1, 1).setValue(sheets[i].getName())
  }
}