JSFiddle - React, Tailwind, and code Playground

HTML

<textarea id="textbox"></textarea>

<button id="button">Submit</button>

JavaScript

$(function () {
    $('#textbox').bind('keypress', function (event) {
        if (event.keyCode == 13) {
            post($(this).val());
        }
    });
    
    $('#button').bind('click', function () {
        post($('#textbox').val());
    });
});

function post (val) {
    
    // Post data here
    alert(val);
    
}