somaria/gist:e965264060502a3c1554953487c7dcff

## gistfile1.txt
<!DOCTYPE html>
<html>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://stg-id.singpass.gov.sg/static/ndi_embedded_auth.js"></script>
  <script>
    function getData(ajaxurl) {
      return $.ajax({
        url: ajaxurl,
        type: "GET"
      });
    }

    async function init() {
      const authParamsSupplier = async () => {
        try {
          const res = await getData(
            "https://singpasslogin.herokuapp.com/getstate"
          );
          return res;
        } catch (err) {
          console.log(err);
        }
      };

      const onError = (errorId, message) => {
        console.log(`onError. errorId:${errorId} message:${message}`);
      };

      const initAuthSessionResponse = window.NDI.initAuthSession(
        "ndi-qr",
        {
          clientId: "abcd1234", // Replace with your client ID
          redirectUri: "https://primuslogin.firebaseapp.com/callback/", // Replace with a registered redirect URI
          scope: "openid",
          responseType: "code"
        },
        authParamsSupplier,
        onError
      );
      console.log("initAuthSession: ", initAuthSessionResponse);
    }
  </script>
  <body onload="init()">
    <h3>Pure JS HTML login</h3>
    <div id="ndi-qr"></div>
  </body>
</html>
	<!DOCTYPE html>
	<html>
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
	<script src="https://stg-id.singpass.gov.sg/static/ndi_embedded_auth.js"></script>
	<script>
	function getData(ajaxurl) {
	return $.ajax({
	url: ajaxurl,
	type: "GET"
	});
	}

	async function init() {
	const authParamsSupplier = async () => {
	try {
	const res = await getData(
	"https://singpasslogin.herokuapp.com/getstate"
	);
	return res;
	} catch (err) {
	console.log(err);
	}
	};

	const onError = (errorId, message) => {
	console.log(`onError. errorId:${errorId} message:${message}`);
	};

	const initAuthSessionResponse = window.NDI.initAuthSession(
	"ndi-qr",
	{
	clientId: "abcd1234", // Replace with your client ID
	redirectUri: "https://primuslogin.firebaseapp.com/callback/", // Replace with a registered redirect URI
	scope: "openid",
	responseType: "code"
	},
	authParamsSupplier,
	onError
	);
	console.log("initAuthSession: ", initAuthSessionResponse);
	}
	</script>
	<body onload="init()">
	<h3>Pure JS HTML login</h3>
	<div id="ndi-qr"></div>
	</body>
	</html>