delete button to user popup

delete.babel.js

const room = document.forms[0].elements.room.value;
const parseNode = node => {
	if (node.classList && node.classList.contains('popup')) {
		if( node.parentNode && node.parentNode.classList && node.parentNode.classList.contains('message') ) { // this is probably overkill.
			addButton(node);
		}
	}
};
const addButton = node => {
	let elm = document.createElement('a');
	let id = node.parentNode.id.split('-')[1];
	elm.style.cursor = 'pointer';
	elm.textContent = 'trash this message';
	elm.addEventListener('click', e => {
		$.post('/admin/movePosts/' + room, fkey({ // I have jQuery, I'm using it. fite me 1v1 bro.
			ids:[id],
			to: 23262
		}));
	});
	let reply = node.querySelector('.reply');
	node.insertBefore(elm, reply.nextElementSibling);
	node.insertBefore(document.createElement('br'), reply.nextElementSibling); // following SO's style guide. 
};
new MutationObserver(records => records.forEach(record => [].forEach.call(record.addedNodes, parseNode))).observe(chat, {
	childList: true,
	subtree: true
});