我知道这听起来很傻......它应该在那里工作......但是：
function fetch(id){
var fetch = new XMLHttpRequest();
fetch.open("GET", "/upload/status?X-Progress-ID=" + id);
fetch.onreadystatechange = function () {
console.log(fetch.readyState);
}
fetch.send(null);
}
这段代码在 IE 和 firefox 中工作......我返回了所有 4 个状态......但是当我在 chrome 中尝试它时，我什么也没得到......而且我完全不知道为什么......
我想你已经猜到了这个问题，为什么它不起作用？
编辑：
稍微更改了代码...正如您可能已经猜到的那样，我使用 nginx 上传进度模块，并且此函数每秒调用一次以获取上传文件的进度...
编辑 1
好吧，我试图重写 $.ajax() 的东西，我基本上得到了相同的结果.. 即 firefox 可以工作，而 chrome 什么也没给我。这是页面的完整代码：
<!doctype html>
<html lang="ru">
<head>
<meta charset="utf-8">
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js" type="text/javascript"></script>
<script src="static/js/jquery-ui-1.8.21.custom.min.js" type="text/javascript"></script>
<script>
function add() {
if (parseInt(document.getElementById('count').getAttribute('value')) < 8) {
var input = document.createElement('input');
input.setAttribute('type','file');
input.setAttribute('multiple','');
input.setAttribute('name','file[]');
document.getElementById('multiple').appendChild(input);
document.getElementById('multiple').appendChild(document.createElement('br'));
document.getElementById('count').setAttribute('value',parseInt(document.getElementById('count').getAttribute('value'))+1);
}
else {
alert('Можно загрузить не более 8 файлов за раз.');
}
}
function progress() {
var ms = new Date().getTime() / 1000;
rq = 0;
id = "";
for (i = 0; i < 32; i++) {
id += Math.floor(Math.random() * 16).toString(16);
}
document.getElementById('upload').action = "/upload/share?X-Progress-ID=" + id;
// console.log("/upload/share?X-Progress-ID=" + id);
document.getElementById('status').style.display = 'block'
interval = window.setInterval(function () { fetch(id, ms); }, 1000);
return true;
}
function fetch(id, ms) {
// console.log("/upload/status?X-Progress-ID=" + id);
$.ajax({
type: "GET",
url: "/upload/status?X-Progress-ID="+id,
dataType: 'text',
complete: function(upload) {
console.log('test');
alert('test');
}
});
// var fetch = new XMLHttpRequest();
// fetch.open("GET", "/upload/status", 1);
// fetch.setRequestHeader("X-Progress-ID", id);
// fetch.open("GET", "/upload/status?X-Progress-ID=" + id);
// fetch.setRequestHeader("X-Progress-ID", id);
// fetch.onreadystatechange = function () {
// console.log('rorororo');
// console.log(fetch.readyState);
// if (fetch.readyState == 3) {
// console.log(fetch.responseText);
//
//// if (fetch.status == 200) {
//
// var now = new Date().getTime() / 1000;
// var upload = eval(fetch.responseText);
//
// if (upload.state == 'uploading') {
// var diff = upload.size - upload.received;
// var rate = upload.received / upload.size;
// var elapsed = now - ms;
// var speed = upload.received - rq; rq = upload.received;
// var remaining = (upload.size - upload.received) / speed;
// var uReceived = parseInt(upload.received) + ' bytes';
// var uDiff = parseInt(diff) + ' bytes';
// var tTotal = parseInt(elapsed + remaining) + ' secs';
// var tElapsed = parseInt(elapsed) + ' secs';
// var tRemaining = parseInt(remaining) + ' secs';
// var percent = Math.round(100*rate) + '%';
// var uSpeed = speed + ' bytes/sec';
// document.getElementById('length').firstChild.nodeValue = parseInt(upload.size) + ' bytes';
// document.getElementById('sent').firstChild.nodeValue = uReceived;
// document.getElementById('offset').firstChild.nodeValue = uDiff;
// document.getElementById('total').firstChild.nodeValue = tTotal;
// document.getElementById('elapsed').firstChild.nodeValue = tElapsed;
// document.getElementById('remaining').firstChild.nodeValue = tRemaining;
// document.getElementById('speed').firstChild.nodeValue = uSpeed;
// document.getElementById('bar').firstChild.nodeValue = percent;
// document.getElementById('bar').style.width = percent
// }
// else {
// window.clearTimeout(interval);
// }
//// }
// }
// }
// fetch.send(null);
}
</script>
</head>
<body>
<form method="post" enctype="multipart/form-data" id="upload" onsubmit="progress();">
<input type="hidden" id="count" value="1" />
<input type="hidden" value="GOBLEBOELBOE" name="secret">
<div id="multiple">
<input type="file" name="file[]" multiple /><br>
</div>
<input type="submit">
<a href="#" onclick="add();">add();</a>
</form>
<div id="status" style="display: none;">
<table width="100%">
<tr><th></th><th>загрузка</th><th>осталось</th><th>всего</th></tr>
<tr><td>время:</td><td id="elapsed">∞</td><td id="remaining">∞</td><td id="total">∞</td></tr>
<tr><td>размер:</td><td id="sent">0 b</td><td id="offset">0 b</td><td id="length">0 b</td></tr>
<tr><td>скорость:</td><td id="speed">n/a</td></tr>
</table>
<div style="border: 1px solid #c0c0c0;">
<div style="background: #c0c0c0; width: 0%; text-align: right;" id="bar">0%</div>
</div>
<a href="#" onclick="if (confirm('Вы точно хотите отменить загрузку?')) window.location = '/'" id="cancel">cancel_upload();</a>
</div>
</body>
</html>
答案： http ://code.google.com/p/chromium/issues/detail?id=45196