JSFiddle - React, Tailwind, and code Playground

HTML

<div data-value="69"></div>
<div data-value="187"></div>
<div data-value="666"></div>

CSS

[data-value] {
  font: bold 64px monospace;
  color: red;
}

JavaScript

function animateValue(elem) {
  return new Promise(resolve => {
    const endValue = +elem.dataset.value;
    let currValue = 0;

    const interval = setInterval(() => {
      if (++currValue === endValue) {
        clearInterval(interval);
        resolve();
      }

      elem.innerText = currValue;
    }, 20);
  });
}


Array
  .from(document.querySelectorAll('[data-value]'))
  .reduce((p, c) => p.then(() => animateValue(c)), Promise.resolve());