JSFiddle - React, Tailwind, and code Playground
HTML
<textarea id="ta" cols=80 rows=10></textarea>JavaScript
const el = document.getElementById('ta');
el.addEventListener('keydown', (ev)=>{
console.log({keydown : el.value});
});
el.addEventListener('keyup',(ev)=>{
console.log({keyup : el.value});
})