【uploadify】uploadify上传个数限制

function deleteUrl(){
     $("body").on("click",".img-wrap .mask span",function(event){
        event.stopPropagation();
                  
        var qs=$(‘#file_upload-queue>div‘);//所有的队列
        var id=qs.eq(2).attr(‘id‘);//得到第三个队列的id
        $(‘#uploadTowedAccredit‘).uploadify(‘cancel‘,id);//这样就行了，会自动重置队列数量和删除dom对象，不能直接qs.eq(2).remove()，无效
          
        /*
        if(!window.confirm("您确定删除附件？")){
            return;
        }
        var imgUrl=$(this).parents(".img-wrap").find("img").attr("src");
        deleteImage(imgUrl);
        $(this).parents(".img-wrap").remove();
        */
    });
};

<li class="blockli clearfix" style="padding-bottom: 5px;">
    <span class="left-name"><em class="red-star">*</em>拖机授权委托书：</span>
    <div class="upload-wrap"  style="width:100px;">
        <input  type="file" name="uploadTowedAccredit" id="uploadTowedAccredit" class="filetext"/>
    </div>
    <span id="uploadTowedAccreditLinkTip" class="warn-tips"><em></em>请上传附件，最多上传${towedAccreditPicMax} 张</span>
    <div id="towedAccreditDiv" class="up-img-list clearfix"></div>
</li>

// 上传拖机授权委托书
function uploadTowedAccreditInit(){
     $("#uploadTowedAccredit").uploadify({
        ‘hideButton‘:‘true‘,
        ‘preventCaching‘ : ‘true‘,
        ‘checkExisting‘:‘true‘,
        ‘swf‘: SWF,  
        ‘uploader‘:uploadImg,
        ‘debug‘:false,
        ‘multi‘: true,
        ‘method‘: ‘post‘,
        ‘preventCaching‘ : true,
        ‘removeCompleted‘ : true,
        ‘removeTimeout‘ : 10,
        ‘requeueErrors‘ : true,
        ‘successTimeout‘ : 30,
        ‘uploadLimit‘ : ${towedAccreditPicMax},
         
        ‘fileObjName‘ : ‘Filedata‘,
        //单张图片最大限制
        ‘fileSizeLimit‘ : ‘1024KB‘,
        ‘fileTypeDesc‘ : ‘Image Files‘,
        //仅限上传jpg格式图片
        ‘fileTypeExts‘ : ‘*.jpg;*.png‘,
        ‘height‘: 24,
        ‘width‘:73,
        ‘buttonText‘ : ‘上传附件‘,
        ‘auto‘: true,
        ‘buttonClass‘:‘uploada btn-fff-24‘,
     
        ‘onSWFReady‘ : function() {
        }, 
         
        ‘onInit‘:function(){
           //  $("#file_upload-button").css("width","100");
         },
                 
        //选择图片完成
        ‘onSelect‘ : function() {
 
        },
         
        //取消上传
        ‘onCancel‘ : function(file) {
        },
        ‘onCheck‘: function(event,data,key) {
        },
        //开始上传
        ‘onUploadStart‘ : function(file) {
            $(‘.uploadify-queue‘).html(‘‘);
        },
         
        //上传过程中
        ‘onUploadProgress‘ : function(file, bytesUploaded, bytesTotal, totalBytesUploaded, totalBytesTotal) {
            $(‘.uploadify-queue‘).html(‘‘);
            $("#uploadTowedAccreditLinkTip").html(‘<em></em>上传中...‘);
        },
         
        //上传完成
        ‘onUploadComplete‘ : function(file) {
                $(‘.uploadify-queue‘).html(‘‘);
                $("#uploadTowedAccreditLinkTip").html(‘<em></em>上传成功，待提交‘);
        },
         
        //上传成功
        ‘onUploadSuccess‘ : function(file, data, response) {
            var obj = eval(‘(‘ + data + ‘)‘);
               var result=obj.result;
               if(result=="true"){
                   var filename=obj.filename;
                   $(‘.uploadify-queue‘).html(‘‘);
                   $(‘#towedAccreditDiv‘).append("<div class=‘img-wrap‘><img width=‘112‘ height=‘84‘ alt=‘‘  src=‘"+filename+"‘><div class=‘mask‘><em></em><span></span></div></div>");
               }
        },
         
        //上传失败  //附件格式不正确，请上传JPG、BMP、PNG格式文件，大小不超过3MB
        ‘onUploadError‘ : function(file, errorCode, errorMsg, errorString) {
            switch(errorCode) {
                case -100:
                    alert("上传的文件数量已经超出系统限制的"+$(‘#uploadTowedAccredit‘).uploadify(‘settings‘,‘queueSizeLimit‘)+"个文件！");
                    break;
                case -110:
                    alert("文件 ["+file.name+"] 大小超出系统限制的"+$(‘#uploadTowedAccredit‘).uploadify(‘settings‘,‘fileSizeLimit‘)+"大小！");
                    break;
                case -120:
                    alert("文件 ["+file.name+"] 大小异常！");
                    break;
                case -130:
                    alert("文件 ["+file.name+"] 类型不正确！");
                    break;
            }
        },
        //上传失败  //附件格式不正确，请上传JPG、BMP、PNG格式文件，大小不超过3MB
        ‘onSelectError‘ : function(file, errorCode, errorMsg) {  
            var msgText = "上传失败\n";  
            switch (errorCode) {  
                case SWFUpload.QUEUE_ERROR.QUEUE_LIMIT_EXCEEDED:  
                    var towedAccreditDivLen = $("#towedAccreditDiv").children().length;
                    msgText += "每次最多上传 " + $(‘#uploadTowedAccredit‘).uploadify(‘settings‘,‘uploadLimit‘) + "个文件";  
                    break;  
                case SWFUpload.QUEUE_ERROR.FILE_EXCEEDS_SIZE_LIMIT:  
                    msgText += "文件大小超过限制( " + $(‘#uploadTowedAccredit‘).uploadify(‘settings‘,‘fileSizeLimit‘) + " )";  
                    break;  
                case SWFUpload.QUEUE_ERROR.ZERO_BYTE_FILE:  
                    msgText += "文件大小为0";  
                    break;  
                case SWFUpload.QUEUE_ERROR.INVALID_FILETYPE:  
                    msgText += "文件格式不正确，仅限 " + $(‘#uploadTowedAccredit‘).uploadify(‘settings‘,‘fileTypeExts‘);  
                    break;  
                default:  
                    msgText += "错误代码：" + errorCode + "\n" + errorMsg;  
            }
            alert(msgText);
        }
   });
     
    //判断用户是否有安装flash
  var obj = $("#uploadTowedAccredit").children().eq(0);
  if(obj.attr(‘type‘)!= "application/x-shockwave-flash"){
        alert(‘系统检测到您的浏览器没有安装flash插件，为了你能够正常上传图片，建议你安装flash‘);
        return;
   }
    
   $("#uploadTowedAccredit").css("float","left");
};