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Core: Handle IE11 bug with document.activeElement in iframes

Fixes #11539
Closes gh-1518
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1 parent 1696405 commit 76c27556f48bea48d3787c241d35e190d46c3245 @scottgonzalez scottgonzalez committed Mar 24, 2015
Showing with 7 additions and 0 deletions.
  1. +7 −0 ui/core.js
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@@ -63,6 +63,13 @@ $.extend( $.ui, {
activeElement = document.body;
}
+ // Support: IE 11 only
+ // IE11 returns a seemingly empty object in some cases when accessing
+ // document.activeElement from an <iframe>
+ if ( !activeElement.nodeName ) {
+ activeElement = document.body;
+ }
+
return activeElement;
},

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