Javascript 如何在回调函数中将ID发送到数据库进行搜索

我在db.js中有一个代码片段，如下所示

exports.asyncGetAllData = function (cb) {
        connection.connect(function(err) {
            connection.query("SELECT * FROM prices WHERE=" + "'" + ID + "'", function (err, result) {
                //console.log("info:" + cb);
                if (err) console.log("Error: " + err);
                else
                {
                    cb(result);
                }
            });
        });
};

我想将和ID从app.js传递到db.js中的asyncGetAllData函数中。下面的代码片段位于app.js中

app.get('/test/getPriceTrend/:parameter', function(req, res) {
console.log('SERVER::testGetPriceTrend');
console.log(req.url);
var str=req.url;

db_connection.asyncGetAllData(function(data) {
    var obj = str.split("&");
    var ID = obj[0].split("/")[3];
    console.log(JSON.stringify(data));
    res.setHeader('Accept', 'application/json');
    res.writeHead(res.statusCode);
    //The following piece of code will send information from the database
    res.write("hello");
    res.end();
});

var str = req.url;
var obj = str.split("&");
var ID  = obj[0].split("/")[3];

db_connection.asyncGetAllData(function(data) {
    ...
}, ID);

}))

在上面提到的代码（app.js）中，我解析了get请求的ID。我想将此ID发送到位于db.js中的asyncGetAllData函数。如何发送ID参数并获取结果

---

提前感谢，

您只需使用附加参数扩展函数即可

exports.asyncGetAllData = function (cb, ID) {
    connection.connect(function(err) {
        connection.query("SELECT * FROM prices WHERE=" + "'" + ID + "'"  ...

然后在app.js中调用函数时传递它

app.get('/test/getPriceTrend/:parameter', function(req, res) {
console.log('SERVER::testGetPriceTrend');
console.log(req.url);
var str=req.url;

db_connection.asyncGetAllData(function(data) {
    var obj = str.split("&");
    var ID = obj[0].split("/")[3];
    console.log(JSON.stringify(data));
    res.setHeader('Accept', 'application/json');
    res.writeHead(res.statusCode);
    //The following piece of code will send information from the database
    res.write("hello");
    res.end();
});

var str = req.url;
var obj = str.split("&");
var ID  = obj[0].split("/")[3];

db_connection.asyncGetAllData(function(data) {
    ...
}, ID);