How to modify Apps Script for Google Sheets to move specific cell from a row into another Sheet - google-apps-script

Question

The script, that I will post below, allows me to use a check box to move an entire row from one sheet to another in the same workbook. Everything works (I was following a YouTube tutorial), but it moves the entire row of data. Instead, I need it to move only data from specific columns, i.e. move the info from column A to C or move the info from column A and column K. I know this might be a simple question, but I just don't know which line to modify and how to modify it so that the script only pulls the info from specific columns within the row to move to the other sheet.
function sendMail() {
var client = 3;
var date = 0;
var email = 19;
var dnr = 18;
var emailTemp = HtmlService.createTemplateFromFile("email");
var ws = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Promos");
var data = ws.getRange("A3:T" + ws.getLastRow()).getValues();
data = data.filter(function(r){return r[1] == true })
data.forEach(function(row){
emailTemp.client = row[client];
emailTemp.date = row[date];
emailTemp.dnr = row[dnr];
var htmlMessage = emailTemp.evaluate().getContent();
GmailApp.sendEmail(row[email],
"Promo Reminder",
"Your email does not support html",
{name: "JV Ops", htmlBody: htmlMessage}
);
});
}
I tried to modify the line "var row = range.getRow()" by putting column letters in the parenthesis but it didn't do anything, not only did it not move the info from those specific columns but it no longer moved the entire row. It just no longer did anything.

Answer 1

You have a spreadsheet in which a "checked" checkbox identified the row(s) that are to be sent an email. However you can't identify the actual row number of the checked checkbox.
There are two issues in your script:
data = data.filter(function(r){return r[1] == true }) replaces the array that contains ALL the data on the sheet with just those rows that contain checked checkboxes.
you need to compare the new filtered array with the original array in order to get the row numbers. I adapted the method described in StackOverflow compare rows on google spreadsheets
the array equalRows contains the row numbers/indexes that contain checked checkboxes.
the OP can use the row number together with the mailData array to copy data on the relevant row.
function myFunction() {
var ws = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Promos")
var data = ws.getRange("A3:T" + ws.getLastRow()).getValues();
// Logger.log(data) // DEBUG
var mailData = data.filter(function(r){return r[1] == true })
// Logger.log(mailData) // DEBUG
// compare rows on google spreadsheets
// https://stackoverflow.com/a/34960630/1330560
var equalRows = [];
for(var i in data){
var anEqualRow = false;
for(var j in mailData){
if(data[i].join() == mailData[j].join()){
anEqualRow = true;
}
}
if(anEqualRow){
var row = +i+3
equalRows.push(row);
}
}
// Logger.log(equalRows) // DEBUG
}