add counter

index.js

@@ -6,7 +6,7 @@ app.use(express.json());
 const port = process.env.PORT || 3000;
 const limiter = rateLimit({
 	windowMs: 60 * 1000, // 1 minute
-	limit: 50, // Limit each IP to 50 requests per `window` (here, per 1 minute).
+	limit: 60, // Limit each IP to 50 requests per `window` (here, per 1 minute).
 	standardHeaders: 'draft-8', // draft-6: `RateLimit-*` headers; draft-7 & draft-8: combined `RateLimit` header
 	legacyHeaders: false, // Disable the `X-RateLimit-*` headers.
 	ipv6Subnet: 56, // Set to 60 or 64 to be less aggressive, or 52 or 48 to be more aggressive

public/index.html

@@ -49,6 +49,7 @@
             captchaUUID = await (await fetch("/new")).text();
             document.getElementById("captcha").src = "/image/" + captchaUUID;
             document.getElementById("solved").value = "";
+            document.getElementById("solvedNum").innerText = `solved: ${await (await fetch("/solved")).text()}`
         }
         async function submit() {
             await fetch('/solve', {
@@ -69,5 +70,6 @@
         <input type="text" id="solved" placeholder="solve the captcha above..">
         <button onclick="submit()">submit</button>
     </div>
+    <p id="solvedNum">solved: -</p>
 </body>
 </html>