jquery获取上传进度和取消上传操作

var xhrOnProgress=function(fun) { ?????????????xhrOnProgress.onprogress = fun; //绑定监听 ?????????????//使用闭包实现监听绑 ?????????????return function() { ???????????????//通过$.ajaxSettings.xhr();获得XMLHttpRequest对象 ???????????????var xhr = $.ajaxSettings.xhr(); ???????????????//判断监听函数是否为函数 ???????????????if (typeof xhrOnProgress.onprogress !== ‘function‘) ?????????????????return xhr; ???????????????//如果有监听函数并且xhr对象支持绑定时就把监听函数绑定上去 ???????????????if (xhrOnProgress.onprogress && xhr.upload) { ?????????????????xhr.upload.onprogress = xhrOnProgress.onprogress; ???????????????} ???????????????return xhr; ?????????????} ???????} ???????//文件上传 快速 ???????function newFileUpload(_this){ ???????????var fd = new FormData(); ???????????fd.append("paragram", 12345); //上传的参数名 参数值 k-v键值对 ???????????fd.append("upfile", $("#upfile").get(0).files[0]);//上传的文件file ???????????ajaxRe =$.ajax({ ???????????????url: "${ctx}/platform/system/sysFile/fileUpload.ht", ???????????????type: "POST", ???????????????processData: false, ???????????????contentType: false, ???????????????data: fd, ???????????????success: function(data) { ???????????????????$("#loading_upload").hide(20); ?????????????????????var fileId=JSON.parse(data).fileId; ???????????????????var fileName=JSON.parse(data).fileName; ???????????????????$("#fileList_upload").html($("#fileList_upload").html()+‘<div style="font-size:15px;height:28px;line-height:28px"><span fileid="‘+fileId+‘" name="attach" file="‘+fileId+‘,‘+fileName+‘" res="oa" filename="‘+fileName+‘">‘+fileName+‘</span>&nbsp;&nbsp;<img onclick="AttachMent.download(this);" style="width:15px;height:15px" src="/oa/styles/common/img/enclosure/download.png">&nbsp;&nbsp;<img onclick="AttachMent.view(this);" style="width:15px;height:15px" src="/oa/styles/common/img/enclosure/preview.png">&nbsp;&nbsp;<img onclick="mailDelFile(‘+fileId+‘,this);" style="width:15px;height:15px" src="/oa/styles/common/img/enclosure/delete.png"></div>‘) ???????????????????var obj={}; ???????????????????obj.id=fileId ???????????????????obj.name=fileName ???????????????????uploadArr.push(obj); ???????????????????$("#filelist").html(JSON.stringify(uploadArr)); ???????????????????$("#upfile").val("") ???????????????}, ???????????????xhr:xhrOnProgress(function(e){ ???????????????????var percent=e.loaded / e.total * 100;//计算百分比 ???????????????????$("#progess").html(percent.toFixed(2)); ???????????????}), ???????????????beforeSend: function(){ ??????????????????????$("#loading_upload").show(20); ?????????????????}, ???????????}) ???????????????????} ???????function canceled_upload(){ ???????????ajaxRe.abort() ???????????$("#upfile").val("") ???????????$("#loading_upload").hide(20); ????????}