从另一个页面表单填充表单

<!-- 源页面 -->
<form id="sourceForm" action="target.html" method="post">
  <input type="text" name="name" value="John">
  <input type="text" name="email" value="john@example.com">
  <input type="submit" value="Submit">
</form>

<!-- 目标页面 -->
<form id="targetForm">
  <input type="text" name="name" placeholder="Name">
  <input type="email" name="email" placeholder="Email">
</form>

<script>
  // 获取URL参数
  const urlParams = new URLSearchParams(window.location.search);
  const name = urlParams.get('name');
  const email = urlParams.get('email');

  // 填充表单
  document.getElementById('targetForm').name.value = name;
  document.getElementById('targetForm').email.value = email;
</script>