JSFiddle - React, Tailwind, and code Playground

HTML

<p>Event Data:
<textarea id="data" style="height:auto" rows = "20" cols="30">Sed non </textarea>
</p>

JavaScript

$("#data").change(function(){
    alert($(this).val());
    if($(this).text().length >40){
        alert("text length out of bound");
    }
});