JSFiddle - React, Tailwind, and code Playground
HTML
<div class="article">
<div>short text<a href="#" class="morebtn">more info</a></div>
<div class="more"></div>
</div>
CSS
.hidden {
display: none
}
JavaScript
$(".article").on('click', '.morebtn', function(){
$(this).parents('.article').find('.more').load('url_containing_moreinfo');
});