HTML Code
<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="UTF-8">

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

  <title>method — dynamic JS</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; }

    label { display: block; margin-bottom: 0.35rem; font-weight: 500; font-size: 0.875rem; }

    input {

      width: 100%;

      max-width: 320px;

      padding: 0.5rem 0.65rem;

      font: inherit;

      border: 1px solid #cbd5e1;

      border-radius: 6px;

    }

    .btns { margin-top: 0.75rem; display: flex; gap: 0.5rem; flex-wrap: wrap; }

    button {

      padding: 0.5rem 1rem;

      font: inherit;

      cursor: pointer;

      border-radius: 6px;

      border: 1px solid #cbd5e1;

      background: #fff;

    }

    button.is-active {

      background: #2563eb;

      color: #fff;

      border-color: #1d4ed8;

    }

    .status {

      margin-top: 0.75rem;

      font-size: 0.8125rem;

      color: #64748b;

      max-width: 420px;

    }

    code { background: #e2e8f0; padding: 0.1rem 0.35rem; border-radius: 4px; }

  </style>

</head>

<body>

  <h1>form.method in JavaScript</h1>

  <form id="dynamicForm" action="/api" method="get">

    <label for="topic">Topic:</label>

    <input type="text" id="topic" name="topic" value="HTML">

  </form>

  <div class="btns">

    <button type="button" id="setGet" class="is-active">Set method to GET</button>

    <button type="button" id="setPost">Set method to POST</button>

  </div>

  <p class="status" id="status">Current form.method: <code>get</code></p>



  <script>

    var form = document.getElementById("dynamicForm");

    var status = document.getElementById("status");

    var btnGet = document.getElementById("setGet");

    var btnPost = document.getElementById("setPost");



    function updateUI(method) {

      form.method = method;

      status.innerHTML = 'Current form.method: <code>' + method + '</code>';

      btnGet.classList.toggle("is-active", method === "get");

      btnPost.classList.toggle("is-active", method === "post");

    }



    btnGet.addEventListener("click", function () { updateUI("get"); });

    btnPost.addEventListener("click", function () { updateUI("post"); });

  </script>

</body>

</html>
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HTML method Attribute — Dynamic form.method with JavaScript
