Check out example codes for "twilio google sheets". It will help you in understanding the concepts better.

Code Example 1

function sendSms(to, body) {
  var messages_url = "https://api.twilio.com/2010-04-01/Accounts/YOURACCOUNTSID/Messages.json";

  var payload = {
    "To": to,
    "Body" : body,
    "From" : "YOURTWILIONUMBER"
  };

  var options = {
    "method" : "post",
    "payload" : payload
  };

  options.headers = { 
    "Authorization" : "Basic " + Utilities.base64Encode("YOURACCOUNTSID:YOURAUTHTOKEN")
  };

  UrlFetchApp.fetch(messages_url, options);
}

function sendAll() {
  var sheet = SpreadsheetApp.getActiveSheet();
  var startRow = 2; 
  var numRows = sheet.getLastRow() - 1; 
  var dataRange = sheet.getRange(startRow, 1, numRows, 2) 
  var data = dataRange.getValues();

  for (i in data) {
    var row = data[i];
    try {
      response_data = sendSms(row[0], row[1]);
      status = "sent";
    } catch(err) {
      Logger.log(err);
      status = "error";
    }
    sheet.getRange(startRow + Number(i), 3).setValue(status);
  }
}

function myFunction() {
  sendAll();
}

Learn ReactJs, React Native from akashmittal.com