node.js实现多图片上传实例

                }
                if(pics){
                    pics += ‘,’+tmp_name;
                }else{
                    pics += tmp_name;
                }
                //判断是否完成
                //console.log(index);
                 //删除临时文件
                fs.unlink(tmpPath, function(){
                    if(err) {
                        throw err;
                    }else{
                        if((index+1)==length){
                    console.log(targetPath);
                    //上传处理完成
                    //数据
                    var data = {
                        x:x,//经度
                        y:y,//维度
                        cat_id:cat_id,//分类id
                        cat_name:cat_name,//分类名称
                        address:address,//地址