CodeLab

Learn by reading real code

Examples and small projects from our lessons. Read the explanation, copy or download the code, run front-end examples live, and experiment in the Playground.

8Examples

2Projects

6Languages

6Live previews

playground.js

const learner = { name: 'You', level: 'beginner' };

function practise(topic) {
  console.log(`${learner.name} is learning ${topic}!`);
  learner.level = 'getting better';
}

['HTML', 'CSS', 'JavaScript'].forEach(practise);

Open the PlaygroundWrite HTML, CSS & JavaScript and see it run

Results 1

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index.html +4 files

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Sign in</title>
  <link rel="stylesheet" href="style.css">

Intermediate Live preview

Login page: HTML, CSS, JavaScript, PHP and MySQL

A complete sign-in page: the form, its styling, friendly checks in the browser, secure PHP and the users table.

HTMLCSSJavaScriptPHPSQL / MySQL

134 lines · 5 files View project