Changeset 43517

Timestamp:

07/19/2018 09:59:23 PM (6 years ago)

Author:

obenland

Message:

Toolbar: Fail gracefully when adding events to non-existent elements

Avoids a type error when obj is not set.

Fixes #44526.

File:

• trunk/src/js/_enqueues/lib/admin-bar.js (modified) (1 diff)

trunk/src/js/_enqueues/lib/admin-bar.js

@@ -304 +304 @@
          */
         var addEvent = function( obj, type, fn ) {
-            if ( obj.addEventListener )
-                obj.addEventListener(type, fn, false);
-            else if ( obj.attachEvent )
-                obj.attachEvent('on' + type, function() { return fn.call(obj, window.event);});
+            if ( typeof obj.addEventListener === 'function' ) {
+                obj.addEventListener( type, fn, false );
+            } else if ( typeof obj.attachEvent === 'function' ) {
+                obj.attachEvent( 'on' + type, function() {
+                    return fn.call( obj, window.event );
+                } );
+            }
         },