Submitting multipart/form-data jQuery and Ajax

FormData()

var form = $('form')[0];

var formData = new FormData(form);

예제

$("form#data").submit(function(event){

 

  //disable the default form submission

  event.preventDefault();

 

  //grab all form data  

  var formData = new FormData($(this)[0]);

 

  $.ajax({

    url: 'formprocessing.php',

    type: 'POST',

    data: formData,

    async: false,

    cache: false,

    contentType: false,

    processData: false,

    success: function (returndata) {

      alert(returndata);

    }

  });

 

  return false;

});

참조 http://digipiph.com/blog/submitting-multipartform-data-using-jquery-and-ajax