Importing CSV in plain Text for specific ranges

Question

With this code I can import from a CSV to a Google Sheet.

I am trying, for the columns C, H, I, the possibility to import the data in plain text.

How could I proceed?

function testf() {
  var response = UrlFetchApp.fetch("https://xxx.csv");
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var dest = ss.getActiveSheet();
  SpreadsheetApp.flush();
  var sheetId = dest.getSheetId();
  var reqs = [
    { pasteData: { data: response.getContentText(), delimiter: ",", coordinate: { sheetId } } },
    { findReplace: { find: "NULL", replacement: "", sheetId } }
  ];
  Sheets.Spreadsheets.batchUpdate({ requests: reqs }, ss.getId());
}

Answer 1

Just a simple example

function lfunko() {
  let s = "abcdefghijklmn<";
  Logger.log(s.split("").filter(c => c.match(/\w/)).join(""));//removes <
}

The complexity of the filter depends upon your data