JSFiddle - React, Tailwind, and code Playground

by reporter

HTML

<div class="grow-wrap">
    <textarea name="text" id="text" onInput="this.parentNode.dataset.replicatedValue = this.value"></textarea>
</div>

JavaScript

jQuery(document).ready(function( $ ) {
    $('body').on('click', '.lineoftext', function() {
        var x = $(event.target).text();
        $('textarea').val((function(index, val) {
            return val + x
        }));
    });
});