use suitescript 2.1 to create a new contact and set the name to John Smith

function createContact(){
  var contact = record.create({
    type: record.Type.CONTACT,
    isDynamic: true
  });
  contact.setValue({
    fieldId: 'firstname',
    value: 'john'
  });
  contact.setValue({
    fieldId: 'lastname',
    value: 'smith'
  });
  contact.save();
}