JSFiddle - React, Tailwind, and code Playground

HTML

<textarea>
    Test Content
    Test Content//1
    Test Content//2
   </textarea>

<div> here display content</div>

CSS

div{
    display:block;
}

JavaScript

$(document).ready(function () {
    var val = $.trim($("textarea").val());
    if (val != "") {1
        $('div').append('<pre>'+val+'</pre>');
    }
});