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我使用 React 建立了一個(gè)類比時(shí)鐘，但秒針有問題。 秒針以順時(shí)針方向開始，但一旦到達(dá) 59 秒標(biāo)記，它就會(huì)逆時(shí)針移動(dòng)，直到到達(dá) 1 秒標(biāo)記。之後它又順時(shí)針移動(dòng)。如何讓它連續(xù)順時(shí)針移動(dòng)？

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;

不確定 css 是否有幫助，但它就在這裡。

.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%);
  }