AJAX jQuery PHP获取JSON

I have a problem with getting a JSON object from a server. The PHP returns a JSON file.

The script always fails and I have no idea why. The PHP when ran in a browser returns this;

{"accountDetails":[{"account_name":"SOMEACCOUNT","auto_id":"1"}

My code:

   <div id="output"> This should change </div>

    <script>

        $(document).ready(function () {

            $.ajax({
                type: 'GET',
                url: 'selectAccounts.php',
                data: "",
                dataType: 'json',

                success: function ()
                {
                    $("#output").text("SUCEEDED");
                },

                error: function () {
                    $("#output").text("UNSUCEEDED");
                }
            });
        });

    </script>

you can parse the errors like

error:function(XMLHttpRequest,textStatus,errorThrown){ /* render that stuff */}