jQuery AJAX file upload returning errors, why? -


when upload file server, response either number or boolean, i'm getting error:

object {readystate: 4, responsetext: "", status: 200, statustext: "ok"} abort : (a) : () catch : (a) done : () fail : () getallresponseheaders : () getresponseheader : (a) overridemimetype : (a) pipe : () progress : () promise : (a) readystate : 4 responsetext : "" setrequestheader : (a,b) state : () status : 200 statuscode : (a) statustext : "ok" : (b,d,e) proto : object

my code this:

var btn = $("input[name=submitname]");             var url = btn.parents("form").attr("action");                 var filename = btn.parents("form").find("input[type=file]").attr("name");                 var fileval = btn.parents("form").find("input[type=file]").val();             var datastring = btn.parents("form").serialize() + "&" + btn.attr("name") + "=" + btn.val() + "&" + filename + "=" + fileval;                 $.ajax({                     url: url,                     type: "post",                      data: datastring,                      processdata: false,                     contenttype: false,                     cache: false,                     success: function(data){                         console.log(data);                     }, error: function(errdata){                         console.log(url);                         console.log(datastring);                         console.log("error:");                         console.log(errdata);                     }                 });

when use same code (without processdata, contenttype , cache) other forms don't have files works, files (images) above error. doing wrong?


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