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                  <form id="form" action="#" method="POST" enctype="multipart/form-data">
      <label for="upload">Прикрепить файл</label>
      <input id="upload" name="upload" type="file" accept="image/png" multiple>
      <label for="name1">Имя</label>
      <input id="name" name="name" type="text" placeholder="Name" pattern="[A-zА-яЁё]{3,}" required>
      <label for="tel">Телефон</label>
      <input id="tel" name="tel" type="tel" placeholder="8-123-456-78-90" required>
    <button type="submit">Отправить</button>




                'use strict';

var form = document.querySelector('#form'),
  upload = form.querySelector('#upload'),
  username = form.querySelector('#name'),
  tel = form.querySelector('#tel');

var onFormSubmit = function (evt) {

  var formData = new FormData(form);
  // var formData = new FormData();

  // var uploadValue = upload.files,
  //   nameValue = username.value,
  //   telValue = tel.value;

  // formData.append('upload', uploadValue);
  // formData.append('name', nameValue);
  // formData.append('tel', telValue);

  var request = new XMLHttpRequest();

  request.addEventListener('load', function () {
    if (request.status === 200) {
    } else {
      console.log('Статус ответа: ' + request.status + ' ' + request.statusText);

  request.addEventListener('error', function () {
    console.log('Произошла ошибка соединения');
  request.addEventListener('timeout', function () {
    console.log('Запрос не успел выполниться за ' + request.timeout + 'мс');

  request.timeout = 10000;"POST", "#");

form.addEventListener('submit', onFormSubmit);