// 引用expess框架 const express = require('express'); // 处理路径 const path = require('path'); const bodyParser = require('body-parser'); // 创建网站服务器 const app = express(); app.use(bodyParser.urlencoded()); app.get('/first', (req, res) => { res.send('hello geyao') }) app.get('/responsdate', (req, res) => { res.send({ "name": "geyao" }) }) app.post('/post', (req, res) => { res.send(req.body); }) app.get('/get', (req, res) => { res.send(req.query); }) app.use(express.static(path.join(__dirname))); // 监听端口 app.listen(3000); console.log('网站服务器启动成功, 请访问localhost')
ajax3.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> </head> <body> <p> <input type="text" id="username"> </p> <p> <input type="text" id="age"> </p> <p> <input type="button" value="提交" name="" id="btn"> </p> <script> var btn = document.getElementById('btn'); var username = document.getElementById('username'); var password = document.getElementById('age'); btn.onclick = function() { //1创建ajax对象 var xhr = new XMLHttpRequest(); //请求方式 var nameValue = username.value; var ageValue = age.value; // var params = 'username=' + nameValue + '&&age=' + ageValue; xhr.open('post', 'http://localhost:3000/post'); //设置参数请求格式类型 xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); xhr.send(params); //发送请求 //获取数据 xhr.onload = function() { console.log(xhr.responseText); } } </script> </body> </html>
