JSFiddle - React, Tailwind, and code Playground

HTML

<div id="test">
   This is a test page to demonstrate text disapper letter by letter
</div>

JavaScript

$(function () {
    var $test = $('#test');
    var timer = setInterval( function () {
        var ln = $test.text().length;
        if (ln == 0) clearInterval(timer);
        
        $('#test').text(function (i, v) {
            return v.substring(1);
        });
    }, 100);
});