<div class="container">
  <div class="txt"></div>
</div>
const txt = document.querySelector('.txt');
let item = 0;

let fun = setInterval(function(){
  item +=1;
  if(item === 5){
    clearInterval(fun);
  }
  txt.innerHTML = item;
},1000);

External CSS

  1. https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css

External JavaScript

This Pen doesn't use any external JavaScript resources.