如何像分钟一样显示时间流逝[关闭]

Question

我要存档的是用过去的新时间间隔替换 td 内部的当前时间。

如果当前时间为 09:33，则输出样本应为 33 分钟前

Answer 1

此处有 2 个选项：hh:mm 读数或 h 小时、m 分钟读数

let intv
window.addEventListener('load', () => {
  intv = setInterval(() => {
    if (document.querySelector('.time')) {
      clearInterval(intv)
      doTimeThing()
    }
  }, 100)
})

function doTimeThing() {
  let d = new Date();
  let ct = (+d.getHours() * 60) + +d.getMinutes();
  let t = document.querySelector('.time').innerText.split(':');
  let ti = (+t[0] * 60) + +t[1];
  let elapsed = ct - ti;
  if (elapsed < 0) {
    console.log('the time has not yet happened')
  } else {
    let eh = ('0' + Math.floor(elapsed / 60)).slice(-2)
    let em = ('0' + elapsed % 60).slice(-2)
    let h = +eh === 1 ? 'hour' : 'hours'
    let m = +em === 1 ? 'minute' : 'minutes'
    let edisp = `${+eh} ${h}, ${+em} ${m} ago`;
    // or if you like this format hh:mm 
    // let edisp = `${eh}:${em} ago`;
    document.querySelector('.time').innerText = edisp;
  }
}

<table>
  <tr>
    <td class="time" tabindex="0">09:00</td>
  </tr>
</table>