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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>min — dynamic range</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}label{display:block;margin:.75rem 0 .35rem;font-size:.875rem;font-weight:500}input[type=range]{width:100%;max-width:320px}button{margin-top:.75rem;padding:.5rem 1rem;font:inherit;cursor:pointer;border-radius:6px;border:1px solid #cbd5e1;background:#2563eb;color:#fff}.status{margin-top:.75rem;font-size:.8125rem;color:#64748b;max-width:420px}code{background:#e2e8f0;padding:.1rem .35rem;border-radius:4px}</style>

</head>

<body>

  <h1>input.min in JavaScript</h1>

  <label for=volume>Volume: <span id=val>50</span></label>

  <input type=range id=volume min=0 max=100 value=50>

  <button type=button id=raiseMin>Raise min to 25</button>

  <p class=status id=status>Current min: 0. Click the button to set <code>volume.min = "25"</code>.</p>



  <script>var volume=document.getElementById("volume"),val=document.getElementById("val"),status=document.getElementById("status");volume.addEventListener("input",(function(){val.textContent=volume.value})),document.getElementById("raiseMin").addEventListener("click",(function(){volume.min="25",Number(volume.value)<25&&(volume.value="25"),val.textContent=volume.value,status.textContent="min updated to 25 via input.min property."}))</script>

</body>

</html>

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HTML min Attribute — Dynamic min with JavaScript