{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.manongdao.com/data/attach/logo/logo.png', '推荐 我欲成王，谁敢阻挡 的问题《Can somehow show progress on file upload without u》','https://www.manongdao.com/q-692183.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
Let's say that I upload a file using a basic multipart post. The server then receives the request and starts to execute the server side code. Can I somehow in that state start to output the response and after some data is sent start to receive the file? Finally when the file is uploaded I output the rest of the response.
If this is possible I can display file upload progress without using ajax?
I guess this might depend on what I run server side. But let's assume that I have full network control.
Why not just display a spinning icon? Google Image Search
It's not AJAX-free but it seems to do everything else you want. At the very least you might be able to reverse engineer a solution more to your liking...
http://digitarald.de/project/fancyupload/