页面最后更新x时间以前在Javascript中

Question

现在我正在使用livestamp.js和moment.js来显示最近x次更新/刷新的页面。但是如果不使用其他js库，可以在普通的js中实现相同的功能。

Answer 1

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var date = new Date();
var finaltime = timeSince(date);
setInterval(function(){
  document.getElementsByTagName('span')[0].innerHTML = timeSince(date);
},30000);
document.getElementsByTagName('span')[0].innerHTML = timeSince(date);

function timeSince(date) {
  var seconds = Math.floor((new Date() - date) / 1000);
  var interval = Math.floor(seconds / 31536000);

  if (interval > 1) {
    return interval + " years";
  }
  interval = Math.floor(seconds / 2592000);
  if (interval > 1) {
    return interval + " months";
  }
  interval = Math.floor(seconds / 86400);
  if (interval > 1) {
    return interval + " days";
  }
  interval = Math.floor(seconds / 3600);
  if (interval > 1) {
    return interval + " hours";
  }
  interval = Math.floor(seconds / 60);
  if (interval >= 1) {
    return interval + " minutes";
  }
  return Math.floor(seconds) + " seconds";
}

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<div> This page is updated <span> </span> ago.</div>

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