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```js
import { attr, derived, el, on, signal } from "/ef.js";

const $opened = signal(false);

querySelector("#demo").appendChild(
  el(
    "label",
    [],
    [
      el("input", [
        attr("type", "checkbox"),
        on("input", (ev) => {
          $opened.set(ev.currentTarget.checked);
        }),
      ]),
      derived(() => ($opened.get() ? "Checked" : "Unchecked")),
    ],
  ),
);
```

ef.js (`@pocka/ef`) is a small JavaScript library that helps writing DOM manipulation in a declarative manner.

- [Introduction](/docs/introduction/)
- [Downloads](/download/)
- [Usage](/docs/usage/)