Javascript:从客户端向express.js发送变量

我无法从js应用程序向node.js服务器发送变量.这是我的代码:

//client side

$.get('http://smart-shopper.ro/messages?from=lastGeneralTimeStamp', datas => {
      console.log("data este " + datas)
})
//and server side:

app.get('/messages/:from', (req, res) => {
    let lastGeneralTimeStamp = req.parms.from;
     var sql = `select * from chat where data > '${lastGeneralTimeStamp}' order by id ASC `;
    con.query(sql, (err, result) => {
        if (err) throw err;
       // res.send(result);
       res.send(result);
        console.log(result)
    })
})

let lastGeneralTimeStamp = req.parms.from;

req.query. 

req.query.from