Create a Contact Group via Google Spreadsheet - google-apps-script

Question

I am trying to create an email distribution list from a Google form. I then want to place the individuals in a particular contact group. Here is the code I've compiled thus far. Please help. Thank you in advance.
function addContact() {
var sheet = SpreadsheetApp.getActiveSheet();
var startRow = 3;
var numRows = 10; // I want the rows to be infinite
var dataRange = sheet.getRange(startRow, 2, numRows, 10)
var data = dataRange.getValues();
for (i in data) {
var row = data[i];
var firstName = row[1];
var lastName = row[2];
var emailAdd = row[3];
}
// The code below creates a new contact and adds it to the "Work Friends" contact group
var contact = ContactsApp.createContact(firstName, lastName, emailAdd);
var group = ContactsApp.getContactGroup('Work Friends');
group.addContact(contact);
}

Answer 1

You were close, just needed some tweaking. See comments in-line, explaining the changes.
function addContact() {
var sheet = SpreadsheetApp.getActiveSheet();
// var startRow = 3; // This implies you have two header rows...
var headerRows = 2; // Number of header rows to skip
// var numRows = 10; // I want the rows to be infinite (so use getDataRange)
var dataRange = sheet.getDataRange(); // Range containing all non-blank rows & cols
var data = dataRange.getValues(); // Read all data
data.splice(0,headerRows); // Remove header rows
for (i =0; i<data.length; i++) { // Avoid using for..in with arrays
var row = data[i];
var firstName = row[1];
var lastName = row[2];
var emailAdd = row[3];
// Do this IN the loop vvv
// The code below creates a new contact and adds it to the "Work Friends" contact group
var contact = ContactsApp.createContact(firstName, lastName, emailAdd);
var group = ContactsApp.getContactGroup('Work Friends');
debugger; // Pause if running in debugger, to examine state
group.addContact(contact);
}
}