<form name="my">
  <input name="one" value="1">
  <input name="two" value="2">
</form>

<script>
  // الحصول على الاستمارة
  let form = document.forms.my; // <form name="my"> العنصر

  // الحصول على العنصر
  let elem = form.elements.one; // <input name="one"> العنصر

  alert(elem.value); // 1
</script>
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