1 function showsize(bytes) {
2 return (bytes / 1024 / 1024).toFixed(2);
5 function trackupload(input) {
6 var progress = document.getElementById('progress');
8 progress = document.createElement('DIV');
9 progress.id = 'progress';
10 progress.textContent = '0%';
11 progress.style.width = '0';
12 var bar = document.createElement('DIV');
13 bar.className = 'bar';
14 bar.appendChild(progress);
15 input.parentNode.insertBefore(bar, input.nextSibling);
18 var ajax = new XMLHttpRequest();
19 ajax.upload.addEventListener('progress', function (e) {
20 var percent = (e.loaded / e.total) * 100;
21 progress.style.width = percent + '%';
22 progress.textContent = Math.floor(percent) + '%';
23 progress.innerHTML += ' <small>(' + showsize(e.loaded) + ' / ' + showsize(e.total) + ' MB)</small>';
25 ajax.addEventListener('load', function (e) {
26 if (e.target.status == 200) {
27 progress.textContent = 'voltooid';
28 progress.innerHTML += ' <small>(' + showsize(input.files[0].size) + ' MB)</small>';
32 progress.textContent = 'fout';
33 progress.innerHTML += ': <small>' + e.target.responseText + '</small>';
35 progress.style.width = '100%';
36 input.parentNode.removeChild(cancel);
38 ajax.addEventListener('error', function (e) {
39 progress.textContent = 'mislukt: ' + e.target.responseText;
41 ajax.addEventListener('abort', function (e) {
42 progress.textContent = 'afgebroken';
43 input.parentNode.removeChild(cancel);
44 input.parentNode.removeChild(progress.parentNode);
47 ajax.open('POST', input.form.action);
48 ajax.setRequestHeader('Accept', 'text/plain')
49 ajax.send(new FormData(input.form));
51 var cancel = document.createElement('BUTTON');
52 cancel.textContent = 'Afbreken';
53 cancel.onclick = function () { ajax.abort() };
54 cancel.style.float = 'left';
55 input.parentNode.insertBefore(cancel, progress.parentNode);
58 document.addEventListener('DOMContentLoaded', e => {
59 for (let row of document.forms[0].elements) {
60 if (row.type == 'file') {
61 row.form.onsubmit = () => {