Post_2_8.js

function uploadFiles(inputId) {
  var input = document.getElementById(inputId);
  var files = input.files;
  var formData = new FormData();

  for (var i = 0; i != files.length; i++) {
    formData.append("files", files[i]);
  }

  $.ajax(
    {
      url: "/uploader",
      data: formData,
      processData: false,
      contentType: false,
      type: "POST",
      success: function (data) {
        alert("Files Uploaded!");
      }
    }
  );
}