JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE HTML>
<html><body><span class="blink">Blink</span></body></html>

JavaScript

var element = $(".blink");
var shown = true;
setInterval(toggle, 500);

function toggle() {
    if(shown) {
        element.hide();
        shown = false;
    } else {
        element.show();
        shown = true;
    }
}