Time stamp a cell when multiple columns are updated - spreadsheet

Question

I have been checking out multiple codes on trying to update my Google Spreadsheet but have been unsuccessful when trying to do this with multiple cells. On my spreadsheet I have multiple tabs and when I update a row in column 2,3 or 4, I would like it to enter the date in column 5.
Thank you for your help.

Answer 1

Step 1.
In the Google Spreadsheet, click on "Script editor..." under the "Tools" menu.
Step 2.
Remove any sample script that might be in there and paste the following ...
// Sets the targetColumn on the edited row to the current date if the
// edited column in within columnBounds.
// Note: This will only handle single cell editing.
// Columns that need to be monitored for changes. Use CAPITAL letters.
var monitoredColumns = ['B', 'C', 'D'];
// Colum that will receive the date.
var targetColumn = 'E'
// To avoid adding the date in the title row, we need to consider the starting row.
var startingRow = 4
// onEdit() is a reserved function name that will be called every time the sheet will be edited.
function onEdit(e) {
var range = e.range;
// Row of the edited cell.
var row = range.getRow();
// Column of the edited cell.
var col = String.fromCharCode(64 + range.getColumn());
if (row < startingRow) {
// None of the monitored rows have been edited.
return;
}
if (monitoredColumns.indexOf(col) < 0) {
// Column B, C or D (2, 3 or 4) was not modified.
// Do not proceed any further.
return;
}
// Current spreadsheet.
var sheet = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
// Date cell.
var dateCell = sheet.getRange(targetColumn + range.getRow());
// Set it to the current date.
dateCell.setValue(new Date());
}
Step 3
Adjust the values of monitoredColumns, targetColumn and startingRow
Step 4
Start entering some content in the cells.