JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id="t1" style='min-width:100px;min-height: 100px'>
     
</textarea>

<div id="d1" style='max-width:200px;min-height:20px;display: none'>
    
</div>

JavaScript

$("#t1").live({
    keyup: function(e){
        
        $("#d1").text($(this).val());
        $(this).css("width", $("#d1").css("width"));
        $(this).css("height", $("#d1").css("height"));
    }
});