<div id="root"></div>

function App() {
  const [value, setValue] = React.useState("");

  return (
    <>
      input: 
      <input
        id="name"
        value={value}
        onInput={(e) => setValue(e.currentTarget.value)}
      />

      <div>state: {value}</div>

      <a href='javascript:(function(){document.getElementById("name").value="\u5c71\u7530"})();'>
        Bookmarklet
      </a>
    </>
  );
}

const root = ReactDOM.createRoot(document.getElementById("root"));
root.render(<App />);