问题 已解决：
在页脚出 填入
<span id="timeDate"></span>
<span id="times"></span>
<script>
var now = new Date();
function createtime() {
var grt = new Date("03/04/2020 00:00:00"); //此处修改你的建站时间或者网站上线时间
now.setTime(now.getTime() + 250); days = (now - grt) / 1000 / 60 / 60 / 24; dnum = Math.floor(days); hours = (now - grt) / 1000 / 60 / 60 - (24 * dnum); hnum = Math.floor(hours); if (String(hnum).length == 1) { hnum = "0" + hnum; } minutes = (now - grt) / 1000 / 60 - (24 * 60 * dnum) - (60 * hnum); mnum = Math.floor(minutes); if (String(mnum).length == 1) { mnum = "0" + mnum; } seconds = (now - grt) / 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 = "本站勉强运行 " + dnum + " 天 "; document.getElementById("times").innerHTML = hnum + " 小时 " + mnum + " 分 " + snum + " 秒"; } setInterval("createtime()", 250);
</script>
感谢以为大佬
