fixes #9222

dist/js/bootstrap.js

@@ -1133,7 +1133,7 @@ if (!jQuery) { throw new Error("Bootstrap requires jQuery") }
         var eventIn  = trigger == 'hover' ? 'mouseenter' : 'focus'
         var eventOut = trigger == 'hover' ? 'mouseleave' : 'blur'
 
-        this.$element.on(eventIn + '.' + this.type, this.options.selector, $.proxy(this.enter, this))
+        this.$element.on(eventIn  + '.' + this.type, this.options.selector, $.proxy(this.enter, this))
         this.$element.on(eventOut + '.' + this.type, this.options.selector, $.proxy(this.leave, this))
       }
     }
@@ -1160,16 +1160,20 @@ if (!jQuery) { throw new Error("Bootstrap requires jQuery") }
     return options
   }
 
-  Tooltip.prototype.enter = function (obj) {
-    var defaults = this.getDefaults()
+  Tooltip.prototype.getDelegateOptions = function () {
     var options  = {}
+    var defaults = this.getDefaults()
 
     this._options && $.each(this._options, function (key, value) {
       if (defaults[key] != value) options[key] = value
     })
 
+    return options
+  }
+
+  Tooltip.prototype.enter = function (obj) {
     var self = obj instanceof this.constructor ?
-      obj : $(obj.currentTarget)[this.type](options).data('bs.' + this.type)
+      obj : $(obj.currentTarget)[this.type](this.getDelegateOptions()).data('bs.' + this.type)
 
     clearTimeout(self.timeout)
 
@@ -1183,7 +1187,7 @@ if (!jQuery) { throw new Error("Bootstrap requires jQuery") }
 
   Tooltip.prototype.leave = function (obj) {
     var self = obj instanceof this.constructor ?
-      obj : $(obj.currentTarget)[this.type](this._options).data('bs.' + this.type)
+      obj : $(obj.currentTarget)[this.type](this.getDelegateOptions()).data('bs.' + this.type)
 
     clearTimeout(self.timeout)
 
@@ -1408,7 +1412,7 @@ if (!jQuery) { throw new Error("Bootstrap requires jQuery") }
   }
 
   Tooltip.prototype.toggle = function (e) {
-    var self = e ? $(e.currentTarget)[this.type](this._options).data('bs.' + this.type) : this
+    var self = e ? $(e.currentTarget)[this.type](this.getDelegateOptions()).data('bs.' + this.type) : this
     self.tip().hasClass('in') ? self.leave(self) : self.enter(self)
   }
 
@@ -1506,13 +1510,9 @@ if (!jQuery) { throw new Error("Bootstrap requires jQuery") }
 
     $tip.removeClass('fade top bottom left right in')
 
-    // Hide empty titles
-    //
     // IE8 doesn't accept hiding via the `:empty` pseudo selector, we have to do
     // this manually by checking the contents.
-    if ($tip.find('.popover-title').html() === '') {
-      $tip.find('.popover-title').hide();
-    }
+    if (!$tip.find('.popover-title').html()) $tip.find('.popover-title').hide()
   }
 
   Popover.prototype.hasContent = function () {

js/popover.js

@@ -58,13 +58,9 @@
 
     $tip.removeClass('fade top bottom left right in')
 
-    // Hide empty titles
-    //
     // IE8 doesn't accept hiding via the `:empty` pseudo selector, we have to do
     // this manually by checking the contents.
-    if ($tip.find('.popover-title').html() === '') {
-      $tip.find('.popover-title').hide();
-    }
+    if (!$tip.find('.popover-title').html()) $tip.find('.popover-title').hide()
   }
 
   Popover.prototype.hasContent = function () {

js/tooltip.js

@@ -64,7 +64,7 @@
         var eventIn  = trigger == 'hover' ? 'mouseenter' : 'focus'
         var eventOut = trigger == 'hover' ? 'mouseleave' : 'blur'
 
-        this.$element.on(eventIn + '.' + this.type, this.options.selector, $.proxy(this.enter, this))
+        this.$element.on(eventIn  + '.' + this.type, this.options.selector, $.proxy(this.enter, this))
         this.$element.on(eventOut + '.' + this.type, this.options.selector, $.proxy(this.leave, this))
       }
     }
@@ -91,16 +91,20 @@
     return options
   }
 
-  Tooltip.prototype.enter = function (obj) {
-    var defaults = this.getDefaults()
+  Tooltip.prototype.getDelegateOptions = function () {
     var options  = {}
+    var defaults = this.getDefaults()
 
     this._options && $.each(this._options, function (key, value) {
       if (defaults[key] != value) options[key] = value
     })
 
+    return options
+  }
+
+  Tooltip.prototype.enter = function (obj) {
     var self = obj instanceof this.constructor ?
-      obj : $(obj.currentTarget)[this.type](options).data('bs.' + this.type)
+      obj : $(obj.currentTarget)[this.type](this.getDelegateOptions()).data('bs.' + this.type)
 
     clearTimeout(self.timeout)
 
@@ -114,7 +118,7 @@
 
   Tooltip.prototype.leave = function (obj) {
     var self = obj instanceof this.constructor ?
-      obj : $(obj.currentTarget)[this.type](this._options).data('bs.' + this.type)
+      obj : $(obj.currentTarget)[this.type](this.getDelegateOptions()).data('bs.' + this.type)
 
     clearTimeout(self.timeout)
 
@@ -339,7 +343,7 @@
   }
 
   Tooltip.prototype.toggle = function (e) {
-    var self = e ? $(e.currentTarget)[this.type](this._options).data('bs.' + this.type) : this
+    var self = e ? $(e.currentTarget)[this.type](this.getDelegateOptions()).data('bs.' + this.type) : this
     self.tip().hasClass('in') ? self.leave(self) : self.enter(self)
   }