formet in 24 hour inn clock function

Hello every one I am writing a abir John and want to find the clock Javascript file

That's code add in javascript file then link in index.html file

function clock(){
var hour = document.getElementById('hour');
var minute = document.getElementById('minute');
var seconds= document.getElementById('seconds');
var amp= document.getElementById('amp');

if(h>12){
    h =h-12;

    var am = "PM"
} ```