## 1.req.query获取前台传递的用户名和密码 >这个例子只在GET下用户 ~~~ //index.html <form action="http://localhost:8080/login" method="GET" role="form"> <legend>Form title</legend> <div > <label >用户名</label> <input type="text" name="user" > </div> <div > <label>用户名</label> <input type="password" name="pwd" > </div> <button type="submit" >Submit</button> </form> ~~~ ~~~ //server.js const express = require('express'); const server = express(); server.use(express.static('www')); /* 用户数据 */ var data ={ user:"chengchao", pwd:123456 } server.get('/login',function(req,res){ var user = req.query.user; var pwd = req.query.pwd; if(user!==data.user){ res.send({ok:false,msg:"此用户不存在"}) }else{ if(user==data.user&& pwd==data.pwd){ res.send({ok:true,msg:"登录成功"}) } } }) server.listen(8080) ~~~ [码云演示代码](https://gitee.com/chengbenchao/node/tree/master/03demo/express-login)