JSFiddle - React, Tailwind, and code Playground

HTML

<div id='testdiv'>
    <a dir='hello' href='#' ></a>
</div>
<input type='button' id='btn' />

JavaScript

$('#btn').on('click', function(){
   if ( $('#testdiv a').attr('dir') == 'hello' ) {
       alert('1111111');
   }
    else
        alert('222');
});