JSFiddle - React, Tailwind, and code Playground

JavaScript

function toTimeString(d) {
    var time = d.toTimeString()
    return time;
}
    
function secondsToHms(d) {    
    var hours = d.getHours().toString().padStart(2, '0')    
    var minutes = d.getMinutes().toString().padStart(2, '0')    
    var seconds = d.getSeconds().toString().padStart(2, '0')
	  
    return `${hours}:${minutes}:${seconds}`
}

console.log(toTimeString(new Date()))
console.log(secondsToHms(new Date()))