final adjustments before the release

This commit:
* adds handling of token expiration,
* adds links to Google's Privacy Policy and Terms and
* includes some other minor fixes adn adjustments.

1 files changed, 16 insertions, 8 deletions

diff --git a/captcha-demo.js b/captcha-demo.js
index 28d331d..9c1ad55 100644
--- a/captcha-demo.js
+++ b/captcha-demo.js
@@ -22,19 +22,27 @@
     if (document.getElementsByClassName("recaptcha-success").length > 0)
 	return;
 
-    const demo_div = document.getElementById("recaptcha-demo");
+    const demo_submit   = document.getElementById("recaptcha-demo-submit");
+    const demo_div      = document.getElementById("recaptcha-demo");
+    const token_field   = document.createElement("textarea");
     const demo_site_key = demo_div.getAttribute("data-sitekey");
 
+    token_field.name = "g-recaptcha-response";
+    token_field.style.display = "none";
+
     while (demo_div.nextElementSibling !== null)
 	demo_div.nextElementSibling.remove();
 
-    const token = await HCHA.run(demo_div, demo_site_key);
-
-    const token_field = document.createElement("textarea");
-
     demo_div.after(token_field);
 
-    token_field.name = "g-recaptcha-response";
-    token_field.style.display = "none";
-    token_field.value = token;
+    demo_submit.setAttribute("disabled", "");
+
+    for await (const token of HCHA.run(demo_div, demo_site_key)) {
+	if (token === null) {
+	    demo_submit.setAttribute("disabled", "");
+	} else {
+	    token_field.value = token;
+	    demo_submit.removeAttribute("disabled");
+	}
+    }
 })();