Uploadify 上传后的文件删除，上传队列无法更新问题

1. 定义一个上传限制数量 var uploadLimit = 3;

2. 点击页面的删除图片成功后，将uploadLimit++操作

3. 通过uploadify的settings方式重置上传限制数量,例如

$('#file_upload').uploadify('settings','uploadLimit', ++uploadLimit);

 参考的http://www.xuebuyuan.com/1422566.html

实际中用于删除图片

 $(document).on('click','.Upload-img i',function(){
	 	$data = $('#file_upload').data('uploadify');//获取上传文件的属性
    	settings = $data.settings;
    	//settings.uploadLimit++;//增加上传数量
    	var uploadLimit=settings.uploadLimit;//获取当前设置的上传文件数限制
    	var _this = $(this);
   		$('#file_upload').uploadify('settings','uploadLimit', ++uploadLimit);//重置增加上传文件数
    	$.each(pictures,function(index,item){
			if(item.picUrl==_this.prev('img').attr('picurl')){
				pictures.splice(index,1);			
				return false;
			}
		});
		console.log(pictures)
    	$(this).parent().remove();
    	console.log(settings.uploadLimit);
	 })