imkost/slender_App.js

## slender_App.js
function server(req, res) {
  return res.end(App({ url: req.url }));
}

function App({ url }) {
  return `
    <!doctype html>
    <html class="app">
      <head>
        <meta charset="utf-8" />
        <title>Slender Website</title>
      </head>
      <body class="app__body">
        ${Header()}
        ${(
          url === '/' ? 'This is MAIN page' :
          url === '/about' ? 'This is ABOUT page' :
          url === '/contacts' ? 'This is CONTACTS page' :
          'This is 404 page'
        )}
      </body>
    </html>
  `;
}

function Header() {
  return `
    <div class="header">
      <a class="header__link" href="/">Main</a>
      <a class="header__link" href="/about">About</a>
      <a class="header__link" href="/contacts">Contacts</a>
    </div>
  `;
}
	function server(req, res) {
	return res.end(App({ url: req.url }));
	}

	function App({ url }) {
	return `
	<!doctype html>
	<html class="app">
	<head>
	<meta charset="utf-8" />
	<title>Slender Website</title>
	</head>
	<body class="app__body">
	${Header()}
	${(
	url === '/' ? 'This is MAIN page' :
	url === '/about' ? 'This is ABOUT page' :
	url === '/contacts' ? 'This is CONTACTS page' :
	'This is 404 page'
	)}
	</body>
	</html>
	`;
	}

	function Header() {
	return `
	<div class="header">
	<a class="header__link" href="/">Main</a>
	<a class="header__link" href="/about">About</a>
	<a class="header__link" href="/contacts">Contacts</a>
	</div>
	`;
	}