HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="UTF-8">

  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <title>onhashchange — hash content</title>

  <style>

    body {

      font-family: system-ui, sans-serif;

      margin: 0;

      padding: 1.5rem;

      background: #f8fafc;

      color: #334155;

      line-height: 1.7;

    }

    h1 { margin: 0 0 0.75rem; font-size: 1.25rem; color: #0f172a; }

    nav { display: flex; gap: 0.5rem; margin-bottom: 1rem; flex-wrap: wrap; }

    nav a {

      padding: 0.35rem 0.75rem;

      border: 1px solid #cbd5e1;

      border-radius: 8px;

      font-size: 0.8125rem;

      text-decoration: none;

      color: #334155;

    }

    #content {

      padding: 0.75rem 1rem;

      background: #eff6ff;

      border: 1px solid #bfdbfe;

      border-radius: 8px;

      font-size: 0.875rem;

      max-width: 420px;

    }

  </style>

</head>

<body>

  <h1>Dynamic Content Based on Hash</h1>

  <p>Click a link — the hash changes and content updates without reload.</p>

  <nav>

    <a href="#home">Home</a>

    <a href="#about">About</a>

    <a href="#contact">Contact</a>

  </nav>

  <div id="content">Loading…</div>



  <script>

    function handleHashChange() {

      var hash = window.location.hash.substring(1) || "home";

      document.getElementById("content").textContent =

        "Content based on hash: " + hash;

    }



    window.onhashchange = handleHashChange;

    handleHashChange();

  </script>

</body>

</html>

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HTML onhashchange Attribute — Dynamic content from hash