Converted to a Go app

public/scripts/controllers/picker.js

@@ -0,0 +1,31 @@
+import { Controller } from "https://unpkg.com/@hotwired/stimulus/dist/stimulus.js";
+
+export default class extends Controller {
+    static targets = ["radio", "answerDetails"];
+
+    static values = {
+        answer: String
+    };
+
+    connect() {
+    }
+
+    submitAnswer(ev) {
+        ev.preventDefault();
+
+        this.element.classList.add("reveal");
+
+        window.setTimeout(() => {
+            this.radioTargets.forEach(e => { 
+                e.disabled = true;
+                if (e.value === this.answerValue) {
+                    e.classList.add("answer");
+                } else {
+                    e.classList.add("wrong");
+                }
+            });
+        }, 1);
+
+        this.answerDetailsTarget.classList.remove("hidden");
+    }
+};

public/scripts/main.js

@@ -0,0 +1,7 @@
+import { Application } from "https://unpkg.com/@hotwired/stimulus/dist/stimulus.js";
+
+import PickerController from "./controllers/picker.js";
+
+window.Stimulus = Application.start();
+
+Stimulus.register("picker", PickerController);