ajax文件上傳成功 解決瀏覽器兼容問題

jQuery.extend({
 createUploadIframe: function(id, uri)
 {
 //create frame
 var frameId = 'jUploadFrame' + id;
 var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"';
 if(window.ActiveXObject)
 {
 if(typeof uri== 'boolean'){
 iframeHtml += ' src="' + 'javascript:false' + '"';
 
 }
 else if(typeof uri== 'string'){
 iframeHtml += ' src="' + uri + '"';
 
 } 
 }
 iframeHtml += ' />';
 jQuery(iframeHtml).appendTo(document.body);
 
 return jQuery('#' + frameId).get(0); 
 },
 createUploadForm: function(id,fileElementId,data,fileElement)
 {
 //create form 
 var formId = 'jUploadForm' + id;
 var fileId = 'jUploadFile' + id;
 var form = jQuery('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>'); 
 if(data)
 {
 for(var i in data)
 {
 jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
 } 
 }
 var oldElement;
 if(fileElement == null)
 oldElement = jQuery('#' + fileElementId);
 else
 oldElement = fileElement;
 
 var newElement = jQuery(oldElement).clone();
 jQuery(oldElement).attr('id', fileId);
 jQuery(oldElement).before(newElement);
 jQuery(oldElement).appendTo(form);
 
 //set attributes
 jQuery(form).css('position', 'absolute');
 jQuery(form).css('top', '-1200px');
 jQuery(form).css('left', '-1200px');
 jQuery(form).appendTo('body'); 
 return form;
 },
 
 ajaxFileUpload: function(s) {
 // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout 
 s = jQuery.extend({}, jQuery.ajaxSettings, s);
 var id = new Date().getTime() 
 var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data),s.fileElement);
 var io = jQuery.createUploadIframe(id, s.secureuri);
 var frameId = 'jUploadFrame' + id;
 var formId = 'jUploadForm' + id; 
 // Watch for a new set of requests
 if ( s.global && ! jQuery.active++ )
 {
 jQuery.event.trigger( "ajaxStart" );
 } 
 var requestDone = false;
 // Create the request object
 var xml = {} 
 if ( s.global )
 jQuery.event.trigger("ajaxSend", [xml, s]);
 // Wait for a response to come back
 var uploadCallback = function(isTimeout)
 { 
 var io = document.getElementById(frameId);
 try
 { 
 if(io.contentWindow)
 {
 xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;
 xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;
 
 }else if(io.contentDocument)
 {
 xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;
 xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;
 } 
 }catch(e)
 {
 jQuery.handleError(s, xml, null, e);
 }
 if ( xml || isTimeout == "timeout") 
 { 
 requestDone = true;
 var status;
 try {
 status = isTimeout != "timeout" ? "success" : "error";
 // Make sure that the request was successful or notmodified
 if ( status != "error" )
 {
 // process the data (runs the xml through httpData regardless of callback)
 console.log( jQuery.uploadHttpData);
 var data = jQuery.uploadHttpData(xml,s.dataType ); 
 // If a local callback was specified, fire it and pass it the data
 if ( s.success )
 s.success( data, status );
 
 // Fire the global callback
 if( s.global )
 jQuery.event.trigger( "ajaxSuccess", [xml, s] );
 } else
 jQuery.handleError(s, xml, status);
 } catch(e) 
 {
 status = "error";
 jQuery.handleError(s, xml, status, e);
 }
 
 // The request was completed
 if( s.global )
 jQuery.event.trigger( "ajaxComplete", [xml, s] );
 
 // Handle the global AJAX counter
 if ( s.global && ! --jQuery.active )
 jQuery.event.trigger( "ajaxStop" );
 
 // Process result
 if ( s.complete )
 s.complete(xml, status);
 
 jQuery(io).unbind()
 
 setTimeout(function()
 { try
 {
 jQuery(io).remove();
 jQuery(form).remove(); 
 
 } catch(e) 
 {
 jQuery.handleError(s, xml, null, e);
 } 
 
 }, 100)
 
 xml = null
 
 }
 }
 // Timeout checker
 if ( s.timeout > 0 ) 
 {
 setTimeout(function(){
 // Check to see if the request is still happening
 if( !requestDone ) uploadCallback( "timeout" );
 }, s.timeout);
 }
 try
 {
 
 var form = jQuery('#' + formId);
 jQuery(form).attr('action', s.url);
 jQuery(form).attr('method', 'POST');
 jQuery(form).attr('target', frameId);
 if(form.encoding)
 {
 jQuery(form).attr('encoding', 'multipart/form-data'); 
 }
 else
 { 
 jQuery(form).attr('enctype', 'multipart/form-data'); 
 } 
 jQuery(form).submit();
 
 } catch(e) 
 { 
 jQuery.handleError(s, xml, null, e);
 }
 
 jQuery('#' + frameId).load(uploadCallback);
 return {abort: function(){
 try
 {
 jQuery('#' + frameId).remove();
 jQuery(form).remove();
 }
 catch(e){}
 }};
 },
 
 uploadHttpData: function( r, type ) {
 var data ="";
 data = (type == "xml" ? r.responseXML : r.responseText);
 if ( type == "script" )
 jQuery.globalEval( data );
 /**
 * auth garen 2016-06-17
 * 對文件上傳后的響應結果進行處理，支持IE FF GC
 * */
 if ( type == "json" ){
 var reg ="";
 if(data.indexOf("<pre>")>-1){
 reg=/<pre>(.+)<\/pre>/g;
 }else{ 
 reg=/<pre.+?>(.+)<\/pre>/g; 
 }
 var result = data.match(reg);
 var stri1=RegExp.$1; 
 if(stri1!=null&&stri1!="" &&stri1.trim().length>0){
 data = stri1; 
 }
 eval( "data =" + data);
 }
 if ( type == "html" )
 jQuery("<div>").html(data).evalScripts();
 return data;
 },
 
 handleError: function( s, xml, status, e ) {
 // If a local callback was specified, fire it
 if ( s.error )
 s.error( xml, status, e );
 
 // Fire the global callback
 if ( s.global )
 jQuery.event.trigger( "ajaxError", [xml, s, e] );
 }
});