app.js

//function
function showTime() {

//variables
    let date = new Date();
    let h = date.getHours();
    let m = date.getMinutes();
    let s = date.getSeconds();
    let session = "AM";

//Conditional Statement
    if(h===0){
        h = 12;
    }

    if(h > 12){
        h = h-12;
        session = "PM";
    }

    h = (h<10) ? "0" + h:h;
    m = (m<10) ? "0" + m:m;
    s = (s<10) ? "0" + s:s;
    
    let time = h + " " + ":" + " " + m + " " + " : " + s + " " + session;
//selectors 
    document.getElementById("clockDisplay").innerText = time;
    document.getElementById("clockDisplay").textContent = time;
    setTimeout(showTime, 1000);
}
showTime();