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Express All In One

express.js, node.js web framework

# v4.17.1 Latest, on May 26, 2019

$ yarn add express

$ npm i -S express

Node.js

$ node -v
# v12.18.0

// simple express server for HTML pages!
// ES6 style

const express = require('express');
const fs = require('fs');
const hostname = '127.0.0.1';
const port = 3000;
const app = express();

let cache = [];// Array is OK!
cache[0] = fs.readFileSync( __dirname + '/index.html');
cache[1] = fs.readFileSync( __dirname + '/views/testview.html');

app.get('/', (req, res) => {
    res.setHeader('Content-Type', 'text/html');
    res.send( cache[0] );
});

app.get('/test', (req, res) => {
    res.setHeader('Content-Type', 'text/html');
    res.send( cache[1] );
});

app.listen(port, () => {
    console.log(`
        Server is running at http://${hostname}:${port}/ 
        Server hostname ${hostname} is listening on port ${port}!
    `);
});

refs

https://github.com/expressjs/express

https://expressjs.com/zh-cn/

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