JSFiddle - React, Tailwind, and code Playground

HTML

<input type="date" value="2014-05-22" />

<button id="js-btn-test" type="button">
    An amazing button
</button>

<div id="js-test-output">
    Test output:
</div>

JavaScript

var btn = document.getElementById("js-btn-test");
var output = document.getElementById("js-test-output");

btn.addEventListener("click", function () {
    output.innerHTML += "<p>Clicked</p>";
});

document.addEventListener("mouseup", function (evt) {
    evt.preventDefault();
});