JSFiddle - React, Tailwind, and code Playground

HTML

<p id='demo'>
  append below:
  <br/>
</p>

<button type="button" onclick="clickTest()">Click Me!</button>

JavaScript

function clickTest() {
  var cars = new Array("Audi", "BMW", "Volvo");
  paraElement = document.getElementById("demo");
  var interval = setInterval(function() {
    var car = cars.shift();
    if (car) {
      paraElement.innerHTML += car + '<br>';
    } else {
      clearInterval(interval);
    }
  }, 1000);
}