Hotfix Copy button generation

output/main.js

@@ -77,8 +77,8 @@ function hideQRModal(communityID) {
 function createJoinLinkButtons() {
 	const join_URLs = dom.join_urls();
 	Array.from(join_URLs).forEach((td_url) => {
-		const a_href = td_url.querySelector('a'); // get first (only) <a> element
-		const join_link = a_href.getAttribute("href"); // get link
+		// Data attributes are more idiomatic and harder to change by accident in the DOM.
+		const join_link = td_url.getAttribute('data-url');
 		td_url.append(transformJoinURL(join_link)); // add interactive content
 	});
 }
@@ -289,3 +289,4 @@ Object.assign(window, {
 	onLoad, sortTable, displayQRModal,
 	hideQRModal, copyToClipboard
 });
+

sites/+components/tbl_communities.php

@@ -61,7 +61,7 @@
 			>
 		</td>
 		<td class="td_join_url">
-			<div class="join_url_container">
+			<div class="join_url_container" data-url="<?=$room->join_link?>">
 				<a class="join_url show-from-w5" title="<?=$room->join_link?>"
 					><?=truncate($room->join_link, 32)?></a>
 				<a class="noscript" href="<?=$room->join_link?>"