Node.js实现兼容IE789的文件上传进度条

 form 
 .on('error',function(err){ 
  console.log(err);
 }) 
 .on('aborted',function(){ 
  console.log('aborted'); 
 })
 .on('progress',function(bytesReceived, bytesExpected){ 
  var n=parseInt(parseFloat(bytesReceived/bytesExpected).toFixed(2)*100); 
  console.log(n); 
 });

 form 
 .on('progress',function(bytesReceived, bytesExpected){ 
  var n=parseInt(parseFloat(bytesReceived/bytesExpected).toFixed(2)*100); 
  res.write('<script>window.parent.call('+n+')</script>'); 
  //无刷新上传，你们懂的 console.log(n); 
 });

 var cookies=function () { 
  var cks=req.headers.cookie.split(';'),obj={}; 
  for(var i=0;i<cks.length;i++){ 
   obj[cks[i].split('=')[0].replace(/\s+/ig,'')]=unescape(cks[i].split('=')[1]); 
  } 
  return obj; 
 }(); 
 var queryToken=cookies.__token__;
 
 form .on('progress',function(bytesReceived, bytesExpected){ 
  var n=parseInt(parseFloat(form.bytesReceived/form.bytesExpected).toFixed(2)*100); 
  if (req.session['file'+queryToken]) {  
   req.session['file'+queryToken].percent=n; 
  }else{ 
   req.session['file'+queryToken]={ 
    token:queryToken, 
    percent:n 
   } 
  }; 
  console.log(n); 
 });

 var getData=function(){ 
  $.post('/uploader',{ 
   getfileinfo:1, 
   uploadtoken:utils.cookie.getCookie('__token__') 
  })
  .then(function(data){ 
   console.log(data);
   if (data.mes<0) { 
    getData(); 
   }else{ 
    var pros=data.info; 
    call(pros.percent);
    if (pros.percent!='100') { 
     getData(); 
    }; 
   }; 
  }); 
 } 
 getData();

 form 
 .on('progress',function(bytesReceived, bytesExpected){ 
  var n=parseInt(parseFloat(form.bytesReceived/form.bytesExpected).toFixed(2)*100);
  if (global['file'+queryToken]) { 
   global['file'+queryToken].percent=n; 
  }else{ 
   global['file'+queryToken]={ 
    token:queryToken, 
    percent:n 
   } 
  }; 
  console.log(n); 
 });