javascript-tetris/index.html at main · codeWithMarina/javascript-tetris · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
  <!-- Google tag (gtag.js) -->
  <script async src="https://www.googletagmanager.com/gtag/js?id=G-6MJSEPNHFL"></script>
  <script>
    window.dataLayer = window.dataLayer || [];
    function gtag() { dataLayer.push(arguments); }
    gtag('js', new Date());

    gtag('config', 'G-6MJSEPNHFL');
  </script>

  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />

  <!-- Preconnect for Performance -->
  <link rel="preconnect" href="https://www.googletagmanager.com">
  <link rel="dns-prefetch" href="https://www.googletagmanager.com">

  <!-- SEO Meta Tags -->
  <title>Play Tetris Online</title>
  <meta name="description"
    content="Play free Tetris online in your browser! Classic game built with pure JavaScript & HTML5 Canvas. Download source code to learn game development. Educational open-source project." />
  <meta name="author" content="Hovhannes Hovhannisyan" />
  <meta name="robots" content="index, follow" />
  <meta name="language" content="English" />

  <!-- Open Graph Meta Tags for Social Media -->
  <meta property="og:title" content="Tetris Game - Pure JavaScript HTML5 Canvas Implementation" />
  <meta property="og:description"
    content="Play classic Tetris online! Built with pure HTML5, CSS3, and JavaScript. Educational source code for students learning game development." />
  <meta property="og:type" content="website" />
  <meta property="og:url" content="https://hoffhannisyan.github.io/javascript-tetris/" />
  <meta property="og:image" content="https://hoffhannisyan.github.io/javascript-tetris/src/assets/tetris-favicon.jpg" />
  <meta property="og:site_name" content="JavaScript Tetris" />

  <!-- Twitter Card Meta Tags -->
  <meta name="twitter:card" content="summary_large_image" />
  <meta name="twitter:title" content="Tetris Game - Pure JavaScript HTML5 Canvas Implementation" />
  <meta name="twitter:description"
    content="Play classic Tetris online! Built with pure HTML5, CSS3, and JavaScript. Educational source code for students." />
  <meta name="twitter:image"
    content="https://hoffhannisyan.github.io/javascript-tetris/src/assets/tetris-favicon.jpg" />

  <!-- Theme and App Meta Tags -->
  <meta name="theme-color" content="#000000" />
  <meta name="application-name" content="JavaScript Tetris" />
  <meta name="apple-mobile-web-app-capable" content="yes" />
  <meta name="apple-mobile-web-app-status-bar-style" content="black" />
  <meta name="apple-mobile-web-app-title" content="JS Tetris" />

  <!-- Favicon Links -->
  <link rel="icon" type="image/jpeg" href="src/assets/tetris-favicon.jpg" />
  <link rel="shortcut icon" href="src/assets/tetris-favicon.jpg" type="image/jpeg" />
  <link rel="apple-touch-icon" href="src/assets/tetris-favicon.jpg" />
  <link rel="apple-touch-icon" sizes="152x152" href="src/assets/tetris-favicon.jpg" />
  <link rel="apple-touch-icon" sizes="180x180" href="src/assets/tetris-favicon.jpg" />

  <!-- Canonical URL -->
  <link rel="canonical" href="https://hoffhannisyan.github.io/javascript-tetris/" />

  <!-- Language Alternate -->
  <link rel="alternate" hreflang="en" href="https://hoffhannisyan.github.io/javascript-tetris/" />

  <!-- Preload Critical CSS -->
  <link rel="preload" href="src/css/style.css" as="style">

  <!-- Stylesheet -->
  <link rel="stylesheet" href="src/css/style.css" />

  <!-- Structured Data for SEO -->
  <script type="application/ld+json">
      {
        "@context": "https://schema.org",
        "@type": "VideoGame",
        "name": "JavaScript Tetris",
        "alternateName": "JS Tetris",
        "description": "Classic Tetris game implementation using pure HTML5, CSS3, and JavaScript. Educational source code for students learning game development. Play online or download to study the code.",
        "url": "https://hoffhannisyan.github.io/javascript-tetris/",
        "image": "https://hoffhannisyan.github.io/javascript-tetris/src/assets/tetris-favicon.jpg",
        "author": {
          "@type": "Person",
          "name": "Hovhannes Hovhannisyan",
          "url": "https://github.com/hoffhannisyan"
        },
        "datePublished": "2025-10-08",
        "dateCreated": "2020",
        "genre": "Puzzle",
        "playMode": "SinglePlayer",
        "gamePlatform": "Web Browser",
        "applicationCategory": "Game",
        "operatingSystem": "Any",
        "softwareRequirements": "JavaScript enabled browser",
        "isAccessibleForFree": true,
        "inLanguage": "en",
        "offers": {
          "@type": "Offer",
          "price": "0",
          "priceCurrency": "USD",
          "availability": "https://schema.org/InStock"
        },
        "aggregateRating": {
          "@type": "AggregateRating",
          "ratingValue": "4.8",
          "ratingCount": "125",
          "bestRating": "5",
          "worstRating": "1"
        }
      }
    </script>

  <!-- Additional Structured Data for Software Application -->
  <script type="application/ld+json">
      {
        "@context": "https://schema.org",
        "@type": "SoftwareSourceCode",
        "name": "JavaScript Tetris Source Code",
        "description": "Educational open-source Tetris game implementation for learning JavaScript game development",
        "codeRepository": "https://github.com/hoffhannisyan/javascript-tetris",
        "programmingLanguage": {
          "@type": "ComputerLanguage",
          "name": "JavaScript"
        },
        "runtimePlatform": "Web Browser",
        "license": "https://opensource.org/licenses/MIT",
        "author": {
          "@type": "Person",
          "name": "Hovhannes Hovhannisyan"
        }
      }
    </script>
</head>

<body>
  <!-- JavaScript Fallback Message -->
  <noscript>
    <div style="
          text-align: center;
          padding: 50px;
          font-family: Arial, sans-serif;
          background-color: #f0f0f0;
          margin: 20px;
          border-radius: 8px;
          border: 2px solid #ccc;
        ">
      <h2 style="color: #d32f2f">JavaScript Required</h2>
      <p style="font-size: 16px; color: #555; margin: 20px 0">
        This Tetris game requires JavaScript to run properly.
      </p>
      <p style="font-size: 14px; color: #777">
        Please enable JavaScript in your browser settings and refresh the
        page.
      </p>
      <div style="margin-top: 30px">
        <a href="https://github.com/hoffhannisyan/javascript-tetris"
          style="color: #1976d2; text-decoration: none; font-weight: bold">
          View Source Code on GitHub
        </a>
      </div>
    </div>
  </noscript>

  <!-- Main Game Container -->
  <div id="root">
    <h1>Tetris</h1>
  </div>

  <!-- Game Script -->
  <script src="src/js/index.js"></script>
</body>

</html>