1.代码
1.1前端代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>AJAX POST 请求</title>
<style>
#result {
width: 200px;
height: 100px;
border: solid 1px #90b;
}
</style>
<script crossorigin="anonymous"></script>
</head>
<body>
<button>发送请求</button>
<div id="result"></div>
</body>
<script>
btn = document.getElementsByTagName("button")[0]
console.log(btn)
btn.onclick = function () {
console.log("点击");
fetch("http://127.0.0.1:8000/server", {
method: "POSt",
headers: {
name: 'lixv' },
body: "a=1&b=2",
}).then( response =>{
return response.json();
}).then(response =>{
console.log(response)
});
};
</script>
</html>
1.2服务端代码
const express = require("express");
const app = express();
const cors = require("cors");
app.use(cors());
app.all("/server", (request, response) => {
response.setHeader("Access-Control-Allow-Origin", "*");
const data = {
name: "lixv000",
};
let str = JSON.stringify(data);
response.send(str);
});
app.listen(8000, () => {
console.log("服务已经启动，8000端口监听中……");
});
2.代码讲解
无须讲解
3.运行结果
