gistfile1.js

var i = 0;

Check.updataPartly = function(foodName, partly, numBig, numSamll, callback){
    //打開資料庫
    mongodb.open(function(err,db){
        if (err) {
            return callback(err);
        }
        //讀取checks的集合
        db.collection('checks',function(err,collection){
            if (err) {
                mongodb.close();
                return callback(err);
            }
            
            collection.update({
                "foodName":foodName[i]
            },{//修改
                $set: {partly: partly-(numSamll[i]+numBig[i])}
            },function(err) {
                mongodb.close();
                if (err) {
                    return callback(err);
                }
                
                i++;
                
                if(foodName[i]) {
                    Check.updataPartly(foodName, partly, numBig, numSamll, callback);
                } else {
                    callback(null);
                }
            });
        
        });
    });
};