JSFiddle - React, Tailwind, and code Playground

HTML

<textarea name="" id="" cols="30" rows="10"></textarea>
<input type="text">
<div contenteditable=true></div>

CSS

*{
    border:1px solid;
}

JavaScript

document.onkeypress = function (e) {
    alert(e.altKey + " from keypress");
};
/*

document.onkeydown = function(e){
    if(e.keyCode !== 18) // if not alt key
        alert(e.altKey + " from keydown");
};
*/