JSFiddle - React, Tailwind, and code Playground

by bluey

HTML

<div class='a'>
</div>
<hr />
<div class='b'>
</div>
<hr />
<button class='btn'>http://jsfiddle.net/bluey/b7cpj5ox/#forkGo</button>

JavaScript

// call a function based on dom sub tree modification
$('.btn').on('click', function(){
    $('.b').append('<span>Derp</span>');
   
});

$('.b').bind("DOMSubtreeModified",function(){
	derp();
});

function derp(){
    $('.b span').each(function(){
        alert('x');
    });
}