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<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

  <meta name=viewport content="width=device-width,initial-scale=1">

  <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 .75rem;font-size:1.25rem;color:#0f172a}nav{display:flex;gap:.5rem;margin-bottom:1rem;flex-wrap:wrap}nav a{padding:.35rem .75rem;border:1px solid #cbd5e1;border-radius:8px;font-size:.8125rem;text-decoration:none;color:#334155}#content{padding:.75rem 1rem;background:#eff6ff;border:1px solid #bfdbfe;border-radius:8px;font-size:.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 n=window.location.hash.substring(1)||"home";document.getElementById("content").textContent="Content based on hash: "+n}window.onhashchange=handleHashChange,handleHashChange()</script>

</body>

</html>

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HTML onhashchange Attribute — Dynamic content from hash