如何在hexo博客上添加运行时间

<!--添加网站运行时间 -->
<!--<br/>-->
<span id="timeDate">载入天数...</span><span id="times">载入时分秒...</span>
<script>
    var now = new Date();

    function createtime() {
        var grt = new Date("06/04/2023 12:00:00"); //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 = " 本站已安全运行 " + dnum + " 天 ";
        document.getElementById("times").innerHTML = hnum + " 小时 " + mnum + " 分 " + snum + " 秒";
    }
    setInterval("createtime()", 250);
</script>
<!-- 添加网站运行时间 -->