Initial DDC release

web/static/js/dom.js

@@ -0,0 +1,13 @@
+export function element(tag, className, text) {
+  const node = document.createElement(tag);
+  if (className) node.className = className;
+  if (text !== undefined && text !== null) node.textContent = text;
+  return node;
+}
+
+export function button(label, className, onClick) {
+  const node = element("button", className, label);
+  node.type = "button";
+  node.addEventListener("click", onClick);
+  return node;
+}