JSFiddle - React, Tailwind, and code Playground

HTML

<span id="lips"></span>

JavaScript

function lips(el, time) {
    time = time || 250;
    if (!el) {
        throw new Error('Oops, you forgot the element');
    }
    el.innerHTML = '...';
    setInterval(function () {
        var len = el.innerHTML.split('').length;
        if (len < 3) {
            el.innerHTML = el.innerHTML + '.';
        } else {
            el.innerHTML = '';
        }
    }, time);
}

lips(document.querySelector('#lips'), 100);