JSFiddle - React, Tailwind, and code Playground

HTML

<textarea name="textarea" cols="20" rows="5" id="controller-about-information-about"   onKeyUp="callname1(event);"
 onKeyDown="callname1(event);"></textarea>

<div id="result"></div>

JavaScript

function callname1(e){
    document.getElementById('result').innerHTML += '<br />'+
        (e.type == 'keyup'? '***UP: '+e.keyCode : 
        e.type == 'keydown'? '*DOWN: '+e.keyCode : e.type);
}