用setInterval()函数制作pomodoro定时器

let workTime = 25 * 60; // 工作时间（以秒为单位）
let breakTime = 5 * 60; // 休息时间（以秒为单位）
let timer = null; // 定时器变量

function startTimer() {
  let time = workTime;
  let minutes, seconds;

  timer = setInterval(function() {
    minutes = Math.floor(time / 60);
    seconds = time % 60;

    console.log(`${minutes}:${seconds}`);

    if (time <= 0) {
      clearInterval(timer);
      console.log("Time's up! Take a break.");
      startBreak();
    }

    time--;
  }, 1000);
}

function startBreak() {
  let time = breakTime;
  let minutes, seconds;

  timer = setInterval(function() {
    minutes = Math.floor(time / 60);
    seconds = time % 60;

    console.log(`${minutes}:${seconds}`);

    if (time <= 0) {
      clearInterval(timer);
      console.log("Break time's over. Back to work!");
      startTimer();
    }

    time--;
  }, 1000);
}

startTimer();