>[success] # 登錄案例 ~~~ /* 登錄驗證（前端+后端+數據庫） */ const express = require('express'); const bodyParser = require('body-parser'); const db = require('./db.js'); // 用的是express 配合數據庫章節中的api const app = express(); app.use(bodyParser.urlencoded({ extended: false })); app.use(express.static('public')); app.post('/check',(req,res)=>{ let param = req.body; let sql = 'select count(*) as total from user where username=? and password=?'; let data = [param.username,param.password]; db.base(sql,data,(result)=>{ if(result[0].total == 1){ res.send('login success!'); }else{ res.send('login failure!'); } }); }); app.listen(3000,()=>{ console.log('running...'); }); ~~~