计算列中的更改次数 - Google Script / Sheets

Question

First of all, I ask you to excuse me if I make some language-mistake (I'm Italian!). I'm trying to write a script for a Google Sheet that can help me to track the number of changes of a column. I would like a counter that grows everytime a value of a cell changes. Ex:

-Column A: the cell A3 changes from "2020" to "2021"
-Column B: the cell B3 changes from 0 to 1 (o from 2 to 3, a simple +1 on the value).

I wrote this code but I cannot understand where is the error.

  function onEdit(e) {
  incrementCounter_(e);
}

function incrementCounter_(e) {
  
  var stw = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Foglio2");
  var c1 = stw.getRange(2, 1);
  var c2 = stw.getRange(2, 2);


  if (!e || !e.range) {
    return;
  }
  
  var sheet = e.range.getSheet();
  for (var i=2; i<=6; i++){
  if (sheet.getName() === stw && e.range.getA1Notation() === stw.getrange().getvalue(i,1)) {
   var cell = stw.getrange().getvalue(i,2);
   cell.setValue((Number(cell.getValue()) || 0) + 1);
  }
}
}

Thanks for the help!

Answer 1

Do you mean this?

function onEdit(e) {
  if (e.range.getA1Notation() === 'A3') {
    var range = SpreadsheetApp.getActiveSheet().getRange('B3');
    var value = range.getValue();
    value++;
    range.setValue(value);
  }
}

Answer 2

There is no need to use two functions for this.

Code

// Copyright 2020 Google LLC.
// SPDX-License-Identifier: Apache-2.0

function onEdit(e) {
  var sheet = e.range.getSheet();
  var sheetName = sheet.getName(); 
  if (sheetName == "Foglio2" && e.range.getColumn() == 1) {
    var row = e.range.getRow();
    var val = sheet.getRange(row, 2).getValue();
   sheet.getRange(row, 2).setValue(val + 1);
  }
}

Explanation

What you want can be achieved by using the onEdit(e) trigger. The above function makes use of the e event object and checks where exactly the edit is being made. As it can be seen, the for loop is not needed in this situation as in order to get the column and row needed the getColumn() and getRow() methods have been used.

In this situation, the script checks if the sheet in which the edit has been made is Foglio2 and if an edit has been made on the A column. If the condition checks, it increments the corresponding value from the B column.

Note

Please note that getValue(value1, value2) is not a valid method and if you want to get the value for that specific range, you must pass the two parameters to the getRange() method.

Reference

• Apps Script Event Objects ;

• Apps Script Sheet Class ;

• Apps Script Range Class - getValue() .