文章时效性提醒

创建Blog\source\js\outdated.js，实际渲染效果取决于博客主题

(function() {
  var times = document.getElementsByTagName('time');
  if (times.length === 0) { return; }
  var posts = document.getElementsByClassName('post-content');
  if (posts.length === 0) { return; }

  var pubTime = new Date(times[0].dateTime);  /* 文章发布时间戳 */
  var now = Date.now()  /* 当前时间戳 */
  var interval = parseInt(now - pubTime)
  /* 发布时间超过指定时间（毫秒）默认30天 */
  if (interval > 3600*24*30*1000){
    var days = parseInt(interval / 86400000)
    /*
    posts[0].insertAdjacentHTML('afterbegin', '<div class="note note-warning" style="font-size:0.9rem"><p>' +
      '<div class="h6">文章时效性提示</div><p>这是一篇发布于 ' + days + ' 天前的文章，部分信息可能已发生改变，请注意甄别。' +
      '</p></p></div>');
    */
    // or
    posts[0].insertAdjacentHTML('afterbegin', '<span class="label label-primary">这是一篇发布于 ' + days + ' 天前的文章</span>');
  }
})();

网站运行时间

创建Blog\source\js\duration.js，实际渲染效果取决于博客主题

!(function() {
  /** 计时起始时间，自行修改(UTC) **/
  var start = new Date("2022/01/11 15:29:33");

  function update() {
    var now = new Date();
    now.setTime(now.getTime()+250);
    days = (now - start) / 1000 / 60 / 60 / 24;
    dnum = Math.floor(days);
    hours = (now - start) / 1000 / 60 / 60 - (24 * dnum);
    hnum = Math.floor(hours);
    if(String(hnum).length === 1 ){
      hnum = "0" + hnum;
    }
    minutes = (now - start) / 1000 /60 - (24 * 60 * dnum) - (60 * hnum);
    mnum = Math.floor(minutes);
    if(String(mnum).length === 1 ){
      mnum = "0" + mnum;
    }
    seconds = (now - start) / 1000 - (24 * 60 * 60 * dnum) - (60 * 60 * hnum) - (60 * mnum);
    snum = Math.round(seconds);
    if(String(snum).length === 1 ){
      snum = "0" + snum;
    }
    document.getElementById("timeDate").innerHTML = "本站已运行&nbsp"+dnum+"&nbsp天";
    document.getElementById("times").innerHTML = hnum + "&nbsp小时&nbsp" + mnum + "&nbsp分&nbsp" + snum + "&nbsp秒🌼";
  }

  update();
  setInterval(update, 1000);
})();