a Refreshing datetime sample in JavaScript

link: https://code.sololearn.com/W7x73lbN06Er/#js

function setTime(){

    var date = new Date();

    var hour = date.getHours();

    var minute = date.getMinutes();

    var second = date.getSeconds();

    document.body.innerHTML = hour + ":" + minute + ":" + second ;

}

setInterval(setTime, 1000);