simulate-lambda-alb/web/index.html

<html>
  <head>
    <meta charset="utf-8"/>
    <script	src="//ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
    <script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.13.2/jquery-ui.min.js"></script>
    <link rel="stylesheet" type="text/css" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.13.2/themes/smoothness/jquery-ui.css"></link>
    <script type="text/javascript">
    function test_lambda(params) {
      $.ajax({
        url: "/lambda?" + params,
        success: function(data){
          alert(JSON.stringify(data));
        }
      });
    }

    function test_lambda_post(params) {
      $.ajax({
        method: "POST",
        url: "/lambda?" + params,
        success: function(data){
          alert(JSON.stringify(data));
        }
      });
    }
   </script>
  </head>
  <body>
    <h1>Sample Ajax Lambda Client</h1>
    <div>
      <fieldset>
        <button onclick="test_lambda('path=test&foo=bar');">Test Lambda GET</button>
      </fieldset>
    </div>
    <div>
      <fieldset>
        <button onclick="test_lambda_post('path=test&foo=bar');">Test Lambda POST</button>
      </fieldset>
  </div>
</body>
</html>