Function Counter

mini-react/src/index.jsx:3–21

(props)

const { render, useState, useEffect } = window.MiniReact;

function Counter(props) {
  const {
    initialNum,
    interval
  } = props;

  const [count, setCount] = useState(initialNum)

  useEffect(() => {
    const timer = setInterval(() => {
        setCount((count)=> count + 1)
    }, interval);
    return () => clearTimeout(timer);
  }, []);

  return <div>
    <p>{count}</p>
  </div>;
}

function App() {
  return <Counter interval={1000} initialNum={10}></Counter>