The difference between partial html ajax and json

html_vs_json

//partial html can simply be inserted into the dom
$('.ajax-content').html(data);

//json needs to be mapped
$('#form_id').val(data['id']);
$('#form_firstName').val(data['firstName']);
$('#form_lastName').val(data['lastName']);
$('#form_phone').val(data['phone']);
$('#form_street').val(data['street']);
$('#form_city').val(data['city']);
$('#form_state').val(data['state']);