单击一次时所有按钮都更新。ReactJs”

可以使用React Hooks来实现。首先，为每个按钮创建一个状态，然后将单击处理程序绑定到按钮上。单击处理程序触发更新相应按钮的状态，从而仅更新单击的按钮。 以下是示例代码：

import React, { useState } from 'react';

function Button() {
  const [button1State, setButton1State] = useState(false);
  const [button2State, setButton2State] = useState(false);

  const handleClick1 = () => {
    setButton1State(!button1State);
  };

  const handleClick2 = () => {
    setButton2State(!button2State);
  };

  return (
    <div>
      <button onClick={handleClick1}>{button1State ? 'ON' : 'OFF'}</button>
      <button onClick={handleClick2}>{button2State ? 'ON' : 'OFF'}</button>
    </div>
  );
}

export default Button;