// javascript const a = 10 const b = new Date() console.log(typeof window) class A { constructor() { // something } } let a = typeof window <div class="container"> // html <div class="header"> <h1>codejs</h1> </div> <div class="content"> <p>codejs is a simple code highlighter.</p> </div> </div> <style> /* css */ .header { background-color: #333; color: #fff; padding: 10px; } .content { padding: 20px; } </style>