参考博客：花猪

  1. 在\themes\butterfly\source\js目录下创建一个readtime.js文件

     1let oSpan = document.getElementsByTagName("readtime")[0];
 2let localhostTime = new Date(); //获取页面打开的时间
 3function tow(n) {
 4  return n >= 0 && n < 10 ? "0" + n : "" + n;
 5}
 6setInterval(function () {
 7  let goTime = new Date(); //获取动态时间
 8  let diffTime = goTime.getTime() - localhostTime.getTime();
 9  var second = Math.floor(diffTime / 1000); //未来时间距离现在的秒数
10  second = second % 86400; //余数代表剩下的秒数；
11  var hour = Math.floor(second / 3600); //整数部分代表小时；
12  second %= 3600; //余数代表 剩下的秒数；
13  var minute = Math.floor(second / 60);
14  second %= 60;
15  // var str = tow(day) + '<span class="time">天</span>'
16  var str =
17    tow(hour) +
18    '<span class="time">小时</span>' +
19    tow(minute) +
20    '<span class="time">分钟</span>' +
21    tow(second) +
22    '<span class="time">秒</span>';
23  oSpan.innerHTML = "您已浏览当前界面" + str;
24}, 1000);

  2. 在主题配置文件_config.butterfly.yml的inject的bottom处引入该js文件

    1- <script src="/js/readtime.js"></script>

  3. 在\themes\butterfly\layout\includes\widget目录下找到card_announcement.pug文件

    image-20230309211729348