Run `grunt`.

docs/dist/js/bootstrap.js

@@ -1279,6 +1279,10 @@ if (typeof jQuery === 'undefined') {
     this.options   = this.getOptions(options)
     this.$viewport = this.options.viewport && $(this.options.viewport.selector || this.options.viewport)
 
+    if (this.$element[0] instanceof document.constructor && !this.options.selector) {
+      throw new Error('`selector` option must be specified when initializing ' + this.type + ' on the window.document object!');
+    }
+
     var triggers = this.options.trigger.split(' ')
 
     for (var i = triggers.length; i--;) {
@@ -1499,10 +1503,10 @@ if (typeof jQuery === 'undefined') {
     this.replaceArrow(arrowDelta, $tip[0][arrowOffsetPosition], isVertical)
   }
 
-  Tooltip.prototype.replaceArrow = function (delta, dimension, isHorizontal) {
+  Tooltip.prototype.replaceArrow = function (delta, dimension, isVertical) {
     this.arrow()
-      .css(isHorizontal ? 'left' : 'top', 50 * (1 - delta / dimension) + '%')
-      .css(isHorizontal ? 'top' : 'left', '')
+      .css(isVertical ? 'left' : 'top', 50 * (1 - delta / dimension) + '%')
+      .css(isVertical ? 'top' : 'left', '')
   }
 
   Tooltip.prototype.setContent = function () {
@@ -2078,7 +2082,7 @@ if (typeof jQuery === 'undefined') {
         element.removeClass('fade')
       }
 
-      if (element.parent('.dropdown-menu')) {
+      if (element.parent('.dropdown-menu').length) {
         element
           .closest('li.dropdown')
             .addClass('active')