Include js helper function in README

README.md

@@ -29,6 +29,39 @@ let page: String = html((
 .unwrap();
 ```
 
+## But what about that small helper function?
+
+Here it is in full, for posteriority:
+
+```js
+function el(name, attributes, ...children) {
+  const element = document.createElement(name);
+  for (const [name, value] of Object.entries(attributes))
+    element.setAttribute(name, value);
+  element.append(...children);
+  return element;
+}
+```
+
+Use it like so:
+
+```js
+const page = el("html", {},
+  el("head", {},
+    el("meta", { charset: "utf-8" }),
+    el("meta", {
+        name: "viewport",
+        content: "width=device-width, initial-scale=1",
+    }),
+    el("title", {}, "Example page")
+  ),
+  el("body", {},
+    el("h1", { id: "heading" }, "Example page"),
+    el("p", {}, "This is an example for a ", el("em", {}, "simple"), " web page."),
+  ),
+);
+```
+
 ## License
 
 This entire project is dual-licensed under the [Apache 2.0] and [MIT] licenses.