JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<textarea id="inputText" rows="10"></textarea>
<a id="inputLink" >Click Me</a>

<textarea id="outputText" rows="10" disabled></textarea>

JavaScript

$('#inputLink').click(function () {
    $('#outputText').val($('#inputText').val().replace(/^(\s*\r\n){2,}/, "\r\n"));
});