Function Demo

ahooks-hook/src/App5.tsx:4–22

(props)

import React, { useState } from 'react';

const Demo: React.FC<{ count: number }> = (props) => {
  const [randomNum, setRandomNum] = useState(Math.random());

  useWhyDidYouUpdate('Demo', { ...props, randomNum });

  return (
    <div>
      <div>
        <span>number: {props.count}</span>
      </div>
      <div>
        randomNum: {randomNum}
        <button onClick={() => setRandomNum(Math.random)}>
          设置随机 state
        </button>
      </div>
    </div>
  );
};

export default () => {
  const [count, setCount] = useState(0);