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                <form id="upload-form">
    <input type="file" id="file-select-input" multiple />
    <button id="upload-button">Upload</button>




                function supportAjaxUploadWithProgress() {
  return supportFileAPI() && supportAjaxUploadProgressEvents() && supportFormData();

  function supportFileAPI() {
    var fi = document.createElement('INPUT');
    fi.type = 'file';
    return 'files' in fi;

  function supportAjaxUploadProgressEvents() {
    var xhr = new XMLHttpRequest();
    return !! (xhr && ('upload' in xhr) && ('onprogress' in xhr.upload));

  function supportFormData() {
    return !! window.FormData;

var form = document.getElementById('upload-form');
var fileSelect = document.getElementById('file-select-input');
var uploadButton = document.getElementById('upload-button');

form.onsubmit = function(event) {
  // Prevent a non-AJAX file upload from starting

  // Let the user know that the upload has begun
  uploadButton.innerHTML = 'Uploading...';

  // Get the selected files from the input
  var files = fileSelect.files;
  // Create a new FormData object
  var formData = new FormData();
  // Loop through each of the selected files.
  for(var i = 0; i < files.length; i++){
    var file = files[i];
    // Check the file type
    if (!/image.*/.test(file.type)) {

    // Add the file to the form's data
    formData.append('photos[]', file,;
  // Set up the request object
  var xhr = new XMLHttpRequest();
  // Open the connection and pass the file name'POST', 'handler.php', true);
  // Set up a handler for when the request finishes
  xhr.onload = function () {
    uploadButton.innerHTML = 'Upload';
    if (xhr.status === 200) {
      // File(s) uploaded
      alert('File uploaded successfully');
    } else {
      alert('Something went wrong uploading the file.');