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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>tabindex — JavaScript example</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}input[type=text]{display:block;width:100%;max-width:280px;margin:.4rem 0;padding:.4rem .5rem;border:1px solid #cbd5e1;border-radius:6px}button{margin-top:.5rem;padding:.4rem .75rem;border:1px solid #cbd5e1;border-radius:6px;background:#fff;cursor:pointer}.hint{font-size:.8125rem;color:#64748b;margin-top:.75rem}</style>

</head>

<body>

  <h1>Dynamic tabIndex</h1>

  <p>Press Tab — the middle field is inserted at position 2 by JavaScript:</p>



  <input placeholder="First Input" tabindex=1>

  <input id=dynamicElement placeholder="Fourth Input (becomes 2nd)">

  <input placeholder="Third Input" tabindex=3>

  <input placeholder="Fifth Input" tabindex=5>

  <button tabindex=6>Click Me</button>



  <script>document.getElementById("dynamicElement").tabIndex=2</script>



  <p class=hint>Tab order: First (1) &rarr; dynamic (2) &rarr; Third (3) &rarr; Fifth (5) &rarr; button (6).</p>

</body>

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HTML tabindex Attribute — dynamic JavaScript