PostSparrow

html form

<form id="form_id"></form>

javascript Code

<script>
      var data = $('#form_id').serialize();
      $.ajax({
            url: 'https://www.postsparrow.com/get_data',
            type: 'POST',
            dataType: 'JSON',
            data: data,
            success: function (data)
            {
                if(data.url)
                {
                    window.location.href = url;
                }
                else
                {
                    window.location.reload();
                }
            }
        });
</script>