JSFiddle - React, Tailwind, and code Playground

HTML

<form action="#">
    <textarea name="comment"></textarea>
</form>

<div id="log">
    
    <p></p>  
    
</div>

JavaScript

var log = document.getElementById("log");


$(function(){
    $('textarea').keypress(function(e) {
        if (e.keyCode == 13 && !e.shiftKey) {
            
            e.preventDefault();
            var frm = this.form; // don't submit the form yet
            
            
            $.ajax({
                url: $(frm).attr('action'), // remember to specify which attribute you want
                data: $(frm).serialize(),
                dataType: "json",
                success: function() { 
                    
                  $("#log").append($("textarea").val());
                    
                    // submit the form when the ajax request is complete
                    // frm.submit();
                }
            });
        }
    });

});