JSFiddle - React, Tailwind, and code Playground

HTML

<form action="./hi_friend.php" method="post"  id="countForm">
<select name="selList" id="selList">
  <option value="1">First</option>
  <option value="2">Second</option>
  <option value="3">Last</option>
</select>
<input type="submit" value="submit">
</form>

JavaScript

$('#countForm').submit(function(){
  var $form = $("#countForm");

	if($("#selList").val() == "1")
  	$form.action = "./first_result.php";
  else if($("#selList").val() == "2")
  	$form.action = "./second_result.php";
  else if($("#selList").val() == "3")
  	$form.action = "./last_result.php";
  
  alert("submit to " + $form.action);
  return true;
});