Write a file t1.js
'use strict'; const express = require('express'); // Constants
const PORT = 8080; // App
const app = express();
app.get('/', function (req, res) {
res.send('Hello world\n');
}); app.listen(PORT);
console.log('Running on http://localhost:' + PORT);
运行
node t1.js
在浏览器输入
http://localhost:8080/