jquery实现的在线模拟时钟特效代码

使用方法

const calculateHourHandAngle = (h, m) => {
  return 0.5 * (60 * h + m);
};

const calculateMinuteHandAngle = m => {
  return 6 * m;
};

const calculateSecondHandAngle = s => {
  return s * 6;
};

const calculateSeconds = angle => {
  return angle / 6;
};

const setClock = () => {
  let date = new Date(Date.now());
  let hours = date.getHours() % 12;
  let minutes = date.getMinutes();
  let seconds = date.getSeconds();
  let hourHandAngle = calculateHourHandAngle(hours, minutes);
  let minuteHandAngle = calculateMinuteHandAngle(minutes);
  let secondHandAngle = calculateSecondHandAngle(seconds);
  $(".hour-hand").css("transform", "rotate(" + hourHandAngle + "deg)");
  $(".minute-hand").css(
  "transform",
  "rotate(" + minuteHandAngle + "deg)");

  $(".second-hand").css(
  "transform",
  "rotate(" + secondHandAngle + "deg)");

};

setClock();

setInterval(() => {
  setClock();
}, 1000);