perf(Scope): exit $broadcast early if nobody is listening for the given event

2014-08-10 07:08:57 -07:00
parent 36e35b2cb1
commit a09fa35641
1 changed files with 5 additions and 2 deletions
@@ -1148,8 +1148,11 @@ function $RootScopeProvider(){
                event.defaultPrevented = true;
              },
              defaultPrevented: false
-            },
-            listenerArgs = concat([event], arguments, 1),
+            };
+
+        if (!target.$$listenerCount[name]) return event;
+
+        var listenerArgs = concat([event], arguments, 1),
            listeners, i, length;

        //down while you can, then up and next sibling or up and next sibling until back at root