a whole load of work in progress

static/throbber.js

@@ -0,0 +1,18 @@
+export class Throbber extends HTMLElement {
+    constructor() {
+        super();
+    }
+
+    connectedCallback() {}
+
+    beginLoading() {
+        this.className = "loading";
+    }
+
+    showError(message) {
+        this.className = "error";
+        this.textContent = message;
+    }
+}
+
+customElements.define("rkgk-throbber", Throbber);