在节点js中，运行for循环后，descriptp不包含任何内容，没有字段写入descrip数组，为什么？
undo调试结果
var express = require('express');
var mysql = require('mysql');
var bodyParser = require("body-parser"); // Body parser for fetch posted data
var app = express()
var connection = mysql.createPool({
host : 'xxx.xx.xxx.xx',
user : 'admin',
database :'admin_btb',
password : 'password'
});
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json()); // Body parser use JSON data
app.post('/test', function(req, res){
var token = req.body.token;
var data = req.body;
console.log(data);
var barcode = req.body.barcode;
var price = {
"number":0,
"price":""
};
connection.query("SELECT token from device where token = ?",[token],function(err, rows, fields){
if(rows.length != 0){
console.log("total = "+barcode.length);
for( var i = 0,length = barcode.length; i < length; i++){
//if (err) throw err;
console.log(i);
console.log(barcode[i])
console.log("Debug 1");
connection.query("SELECT unitprice from product where barcode = ?",[barcode[i]],function(err, rows, fields){
console.log("Debug 2");
price["price"[i]] = rows;
console.log("Debug 3");
console.log("Debug 4");
console.log(rows);
//res.json(rows);
});
console.log("Debug 5");
}
console.log("Debug 6");
}else{
res.status(400).send("not have token");
}console.log("Debug 7");
});
});