JSFiddle - React, Tailwind, and code Playground

HTML

<input id="text_tag_input" type="text" name="tags" />
                                        
<div class="tags_select">
    <a href="#">text1</a>
    <a href="#">text2</a>
    <a href="#">text3</a>
</div>

JavaScript

$('a').click(function(){
    $('#text_tag_input').val($('#text_tag_input').val()+$(this).html()+', ');
});