TIL

const http = require('http');

const server = http.createServer((req, res) => {
    res.writeHead(200, {'Content-Type': 'text/html; charset=utf-8'});
    res.write('<h1>Hello Node!</h1>');
    res.write('<p>Hello Server</p>');
    res.end('<p>Hello There! </p>');
}).listen(8080)

server.on('error', (error) => {
    console.log(error);
})

server.on('listening', () => {
    console.log('8080 port is on.');
})

const url= require('url');

const {URL} = url;
const myUrl = new URL('https://www.naver.com');
console.log('new URL(): ', myUrl);
console.log('url.format(): ', url.format(myUrl));

const person = {
    name: "Lee",
    address: 'Seoul',
    __proto__: {age:20}
};

for (const key in person){
    if(!person.hasOwnProperty(key)) continue;
    console.log(key + ": " + person[key]);
}

const {odd, even} = require('./var');

function checkOddEven(number){
    if (number%2){
        return odd;
    } else {
        return even;
    };
};

module.exports = {
    checkOddEven,
    odd,
    even,
};

const {odd, even} = require('./var');
const checkOddEven = require('./func');

console.log(checkOddEven);
console.log()