获取网站运行天数JS代码

勉强运行<span id="iday"></span>天 
<script>
    function siteRun(d){
    var nowD=new Date();
        return parseInt((nowD.getTime()-Date.parse(d))/24/60/60/1000)
    } 
    document.getElementById("iday").innerHTML=siteRun("2019/11/11");
</script>