修改FlipClock，以便在刷新页面时不重置计时器

// 初始化FlipClock
var clock = new FlipClock($('.clock'), {
    countdown: true,
    clockFace: 'DailyCounter'
});

// 判断是否存在计时器状态
if (localStorage.getItem('clockStatus')) {
    var clockStatus = JSON.parse(localStorage.getItem('clockStatus'));
    if (clockStatus.isRunning) {
        // 继续计时
        clock.setTime(clockStatus.remainingTime);
        clock.start();
    } else {
        // 暂停计时
        clock.setTime(clockStatus.remainingTime);
        clock.stop();
    }
} else {
    // 设置默认计时时间
    var defaultTime = 3600; // 1小时
    clock.setTime(defaultTime);
    clock.start();
}

// 监听计时器状态变化
clock.callbacks.add(function() {
    var clockStatus = {
        isRunning: clock.running,
        remainingTime: clock.getTime().time
    };
    localStorage.setItem('clockStatus', JSON.stringify(clockStatus));
});