grunt

dist/js/bootstrap.js

@@ -4,7 +4,16 @@
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
-if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript requires jQuery') }
+if (typeof jQuery === 'undefined') {
+  throw new Error('Bootstrap\'s JavaScript requires jQuery')
+}
+
++function ($) {
+  var version = $.fn.jquery.split(' ')[0].split('.')
+  if ((version[0] < 2 && version[1] < 9) || (version[0] == 1 && version[1] == 9 && version[2] < 1)) {
+    throw new Error('Bootstrap\'s JavaScript requires jQuery version 1.9.1 or higher')
+  }
+}(jQuery);
 
 /* ========================================================================
  * Bootstrap: transition.js v3.2.0
@@ -772,7 +781,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
     if (!$items.length) return
 
-    var index = $items.index($items.filter(':focus'))
+    var index = $items.index(e.target)
 
     if (e.which == 38 && index > 0)                 index--                        // up
     if (e.which == 40 && index < $items.length - 1) index++                        // down

docs/dist/js/bootstrap.js

@@ -4,7 +4,16 @@
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
-if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript requires jQuery') }
+if (typeof jQuery === 'undefined') {
+  throw new Error('Bootstrap\'s JavaScript requires jQuery')
+}
+
++function ($) {
+  var version = $.fn.jquery.split(' ')[0].split('.')
+  if ((version[0] < 2 && version[1] < 9) || (version[0] == 1 && version[1] == 9 && version[2] < 1)) {
+    throw new Error('Bootstrap\'s JavaScript requires jQuery version 1.9.1 or higher')
+  }
+}(jQuery);
 
 /* ========================================================================
  * Bootstrap: transition.js v3.2.0
@@ -772,7 +781,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
 
     if (!$items.length) return
 
-    var index = $items.index($items.filter(':focus'))
+    var index = $items.index(e.target)
 
     if (e.which == 38 && index > 0)                 index--                        // up
     if (e.which == 40 && index < $items.length - 1) index++                        // down