为网站添加一个运行时间代码

前言：

将下面代码加到footer的合适位置自行调整

代码：

<!-- 开站时间开始 -->       
             <a id="timeDate">载入天数...</a><a id="times">载入时分秒...</a> <script language="javascript"> 
    var now = new Date();
    function createtime(){
        var grt= new Date("04/17/2022 00:00:00");/*---这里是网站的启用时间--*/
        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 = "稳定运行"+dnum+"天";
        document.getElementById("times").innerHTML = hnum + "小时" + mnum + "分" + snum + "秒";
    }
    setInterval("createtime()",250); 
</script> 
<!-- 开站时间结束 -->