Saya membina jam analog menggunakan React tetapi saya mempunyai masalah dengan tangan kedua. Jarum kedua bermula mengikut arah jam, tetapi apabila ia mencapai tanda 59 saat, ia bergerak melawan arah jam sehingga mencapai tanda 1 saat. Selepas itu ia bergerak mengikut arah jam semula. Bagaimana untuk menjadikannya bergerak secara berterusan mengikut arah jam?

import React, { useEffect, useState } from 'react';
import './AnalogClock.css';

const AnalogClock = () => {
  const [time, setTime] = useState(new Date());

  useEffect(() => {
    const interval = setInterval(() => {
      const newTime = new Date();
      setTime(newTime);
    }, 1000);

    return () => {
      clearInterval(interval);
    };
  }, []);

  const getRotation = (unit, max) => {
    const value = time[`get${unit}`]();
    let rotation = (value * 360) / max;

    if (unit === 'Seconds') {
      const seconds = value + time.getMilliseconds() / 1000;
      rotation = (seconds * 6) % 360;

      if (rotation < 0) {
        rotation += 360;
      }
    }

    return {
      transform: `translate(-50%, -100%) rotate(${rotation}deg)`,
    };
  };

  const renderNumbers = () => {
    const numbers = [];

    for (let i = 1; i <= 12; i++) {
      const angle = (i * 30) * (Math.PI / 180);
      const numberStyle = {
        left: `calc(50% + ${Math.sin(angle) * 140}px)`,
        top: `calc(50% - ${Math.cos(angle) * 140}px)`,
      };
      numbers.push(
        <div key={i} className="number" style={numberStyle}>
          {i}
        </div>
      );
    }

    return numbers;
  };

  return (
    <div className="clock">
      {renderNumbers()}
      <div className="hour-hand" style={getRotation('Hours', 12)}></div>
      <div className="minute-hand" style={getRotation('Minutes', 60)}></div>
      <div
        className="second-hand"
        style={
          time.getSeconds() === 59
            ? { ...getRotation('Seconds', 60), transition: 'none' }
            : getRotation('Seconds', 60)
        }
      ></div>
      <div className="center-circle"></div>
    </div>
  );
};

export default AnalogClock;

Tidak pasti sama ada css membantu, tetapi ini dia.

.clock {
    position: relative;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background-color: #e0e0e0;
    box-shadow: 20px 20px 40px rgba(0, 0, 0, 0.2), -20px -20px 40px rgba(255, 255, 255, 0.7);
    padding: 20px;
  }
  
  .hour-hand,
  .minute-hand,
  .second-hand {
    position: absolute;
    background-color: #333;
    transform-origin: bottom center;
    transition: transform 0.5s ease-in-out;
    box-shadow: 4px 4px 8px rgba(0, 0, 0, 0.2), -4px -4px 8px rgba(255, 255, 255, 0.7);
  }
  
  .hour-hand {
    width: 8px;
    height: 90px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -100%) translateX(-1px);
    border-radius: 8px 8px 0 0;
  }
  
  .minute-hand {
    width: 6px;
    height: 120px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -100%) translateX(-1px);
    border-radius: 6px 6px 0 0;
  }
  
  .second-hand {
    width: 4px;
    height: 130px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -100%) translateX(-1px);
    border-radius: 4px 4px 0 0;
    background-color: #ff0000;
  }
  
  .center-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    background-color: #333;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2), -2px -2px 4px rgba(255, 255, 255, 0.7);
  }
  .number {
    position: absolute;
    font-size: 29px;
    font-weight: bold;
    color: #333;
    transform: translate(-50%, -50%);
  }