// 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>运行结果
