Google Sheet - copy row if checkbox is active - google-apps-script

Question

CONTEXT
In a google spreadsheet, copy entire row to another tab when checkbox is active
The below code works and was found online in Code source
function onEdit(event) {
// source sheet named Source A
// target sheet of move to named Development
// getColumn with check-boxes is currently set to column 21
var ss = SpreadsheetApp.getActiveSpreadsheet();
var s = event.source.getActiveSheet();
var r = event.source.getActiveRange();
if(s.getName() == "Source A" && r.getColumn() == 21 &&
r.getValue() == true) {
var row = r.getRow();
var numColumns = s.getLastColumn();
var targetSheet = ss.getSheetByName("Development A");
var target = targetSheet.getRange(targetSheet.getLastRow() + 1, 1);
s.getRange(row, 1, 1, numColumns).copyTo(target, {contentsOnly:true});
}
}
PROBLEM
I would like to have this code working in 2 tabs (sheets): Source A and Source B to 2 different destination sheets: Destination A and Destination B
Limitation of one onEdit(event)
WHAT I'VE TRIED
Adding "else if" to the code but it only worked for Source A:
else if if(s.getName() == "Source B" && r.getColumn() == 21 && etc
Instead of using onEdit(event), named each function and then tried to use triggers (onEdit) but nothing worked
Can anyone give me a hand?
Thank you in advance.

Answer 1

function onEdit(e) {
const sh = e.range.getSheet();
const shts = ['Source A','Source B'];
if (~shts.indexOf(sh.getName()) && e.range.columnStart == 21 && e.value == "TRUE") {
//e.range.setValue("FALSE");//reset the checkbox
let tsh = e.source.getSheetByName("Development");
var tgt = tsh.getRange(tsh.getLastRow() + 1, 1);
sh.getRange(e.range.rowStart, 1, 1, sh.getLastColumn()).copyTo(tgt, { contentsOnly: true });
}
}
function onEdit(e) {
const sh = e.range.getSheet();
const shts = ['Source A','Source B'];
const tgts = ['Dest A','Dest B'];
const idx = shts.indexOf(sh.getName());
if (~idx && e.range.columnStart == 21 && e.value == "TRUE") {
//e.range.setValue("FALSE");//reset the checkbox
let tsh = e.source.getSheetByName(tgts[idx]);
var tgt = tsh.getRange(tsh.getLastRow() + 1, 1);
sh.getRange(e.range.rowStart, 1, 1, sh.getLastColumn()).copyTo(tgt, { contentsOnly: true });
}
}