The following code

var http = require('http')
var fs = require('fs')
var url = require('url')
var port = process.argv[2]

if(! port) {console.log('Please enter port number \n for example: node server.js 8888')
    process.exit(1)}var server = http.createServer(function (request, response) {
    var parsedUrl = url.parse(request.url, true)
    var pathWithQuery = request.url
    var queryString = ' '
    if (pathWithQuery.indexOf('? ') > =0) { queryString = pathWithQuery.substring(pathWithQuery.indexOf('? '))}var path = parsedUrl.pathname
    var query = parsedUrl.query
    var method = request.method

    /******** start here, don't look at ************/ above

    console.log('Request received! The request path (with query parameters) is: ' + pathWithQuery)

    if (path === '/') {
        response.statusCode = 200
        response.setHeader('Content-Type'.'text/html; charset=utf-8')
        response.write(` 
       
Hello Node.js
 `)
        response.end()
    } else if (path === '/style.css') {
        response.statusCode = 200
        response.setHeader('Content-Type'.'text/css; charset=utf-8')
        response.write(`h1{color: red; } `)
        response.end()
    } else {
        response.statusCode = 404
        response.setHeader('Content-Type'.'text/html; charset=utf-8')
        response.write(The page you visited does not exist)
        response.end()
    }

    /******** code ends, do not read ************/
})

server.listen(port)
console.log('listen' + port + 'Success \n Please use your browser to open http://localhost:' + port)



Copy the code