fix: typo hasAttributes to hasAttribute

Author: frankpagan

demo/index.html

@@ -127,7 +127,7 @@ <h6 style='color:blue'>7 example  SELECT (show multiples)</h6>
     <div class='ctr_check1' hidden> CHECK4</div>
     <div id='ctr_other1' hidden> OTHER</div>
 
-    <div hide='iframe;,#testdiv1' show='iframe;#testdiv1,#testdiv1'>
+    <div hide='iframe;,#testdiv1' show='iframe;,#testdiv1'>
         <div class="test">click me</div>
     </div>
 

src/index.js

@@ -88,7 +88,7 @@ function clickShowHideEle(e) {
 		let updated_els = [];
 
 		for (let el of queryFrameSelectorAll(show)) {
-			if (el.hasAttributes('hidden')) {
+			if (el.hasAttribute('hidden')) {
 				el.removeAttribute('hidden');
 				updated_els.push(el);
 			}