popup pure js
testing
HTML
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button id="popme">
click for pop
</button>
<div class="modal">
</div>
SCSS
.modal {
position
}
JavaScript
var body = document.querySelector("body");
body.innerHTML += "ready";
document.getElementById("popme").onclick = function() {
alert();
};