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>test<br>test</option>
</select><br/><br/>
<textarea id='txtarea'></textarea>

CSS

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

JavaScript

$(document).ready(function() {
    var tempValue = '';
    $('select').change(function() {
        tempValue += $(this).val();
        $('textarea').html(tempValue);        
    });
});