JSFiddle - React, Tailwind, and code Playground

by aldomatic

HTML

asdfasfasfasfasdfasfasdfasfasfasfasdfasdf<br />
<input type="button" value="Hey There!" />

JavaScript

window.onbeforeunload = function () {
        return "You have not saved your document yet.  If you continue, your work will not be saved."
    }