JSFiddle - React, Tailwind, and code Playground

HTML

<select id='sel' size='1'>
    <option>&#60;&#62;&#60;&#47;&#62;</option>
    <option>&#60;p&#62;&#60;&#47;p&#62;</option>
    <option>&#60;div&#62;&#60;&#47;p&#62;</option>
    <option>&#60;a&#62;&#60;&#47;a&#62;</option>
</select><br/><br/>
<textarea id="txtarea"></textarea>

CSS

textarea{width:100%;height:200px;}

JavaScript

$('select').change(function() {
        $('#txtarea').append(document.createTextNode($(this).val()));   
    })