Google Apps Script : Get row number matching value - google-apps-script

Question

I'm need some assistance in my problem.
I'm currently working on a script that works like this :
Send form
Lookup the value in table
Get the row number to use in another function
I have searched for the solution but mostly use logger to display value, I need the value as local variable to be used in other function.
Here is my current code up until the point I try to get row number :
function autoFillGoogleDocFromForm(e) {
//e.values is an array of form values
var Timestamp = e.values[0];
var Nama = e.values[1];
var Prinsipal = e.values[2];
var Email = e.values[3];
var Site = e.values[4];
var Mobil = e.values[5];
var Jumlah = e.values[6];
var ETD = e.values[7];
var ETA = e.values[8];
var Keterangan = e.values[9];
var ss = SpreadsheetApp.getActiveSpreadsheet();
var sheet = ss.getSheetByName('Master Email Site');
var data = sheet.getDataRange().getValues();
var RowCabang = Site
for(var i = 0; i<data.length;i++){
if(data[i][0] == Site){ //[0] because column A
return i+1;
}
}
var EmailCol = 2;
var EmailDest = sheet.getRange(RowCabang, EmailCol).getValue();
With this script, the trigger is completed but it doesnt capture the row number as var to be used.
Thank you for your assistance.

Answer 1

Try this pattern:
let RowCabang;
data.some((row, index) => {
if (row[0] === Site) {
RowCabang = index + 1;
return true;
}
});