从REST API处理客户端错误

I use ajax() and the result I got is a list of object array. When user pass invalid param, instead of the server side give me an invalid message it gave me fatal error (PHP). I have no control over the PHP, how should I catch if there's invalid respond?

I can't do respond == 'undefined'.

I think you are using $.ajax() of jQuery?

$.ajax({ 
 url: 'myphpfile.php',
 type: 'get',
 datatype: 'json',
 success: function(data) {
  alert('No PHP file error');
 }
// now with error handling
,error {
 alert('PHP file error');
}

});