视频
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>jQuery 发送 AJAX 请求</title>
<link crossorigin="anonymous" href="https://cdn.bootcss.com/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
<script crossorigin="anonymous" src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
</head>
<body>
<div class="container">
<h2 class="page-header">jQuery发送AJAX请求 </h2>
<button class="btn btn-primary">GET</button>
<button class="btn btn-danger">POST</button>
<button class="btn btn-info">通用型方法ajax</button>
</div>
<script>
$('button').eq(0).click(function(){
$.get('http://127.0.0.1:8000/jquery-server', {a:100, b:200}, function(data){
console.log(data);
},'json');
});
$('button').eq(1).click(function(){
$.post('http://127.0.0.1:8000/jquery-server', {a:100, b:200}, function(data){
console.log(data);
});
});
</script>
</body>
</html>
JS
//1. 引入express
const express = require('express');
//2. 创建应用对象
const app = express();
//3. 创建路由规则
// request 是对请求报文的封装
// response 是对响应报文的封装
//jQuery 服务
app.all('/jquery-server', (request, response) => {
//设置响应头 设置允许跨域
response.setHeader('Access-Control-Allow-Origin', '*');
response.setHeader('Access-Control-Allow-Headers', '*');
// response.send('Hello jQuery AJAX');
const data = {name:'尚硅谷'};
response.send(JSON.stringify(data));
});
//4. 监听端口启动服务
app.listen(8000, () => {
console.log("服务已经启动, 8000 端口监听中....");
});
