getChildByName()与getChildAt()效率比较

var monClip:MovieClip
=

new
MovieClip();

monClip.name
=

"
monOcurrence
"
;

addChild ( monClip );

var depart:Number
=
getTimer();

for
( var i:
int

=

0
; i
<

5000000
; i
++
)

{

getChildByName (
"
monOcurrence
"
);

}

var arrivee:Number
=
getTimer();

//
affiche :
854
ms

trace( (arrivee
-
depart)
+

"
ms
"
);

////////////////////////////

var monClip:MovieClip
=

new
MovieClip();

monClip.name
=

"
monOcurrence
"
;

addChild ( monClip );

var depart:Number
=
getTimer();

for
( var i:
int

=

0
; i
<

5000000
; i
++
)

{

getChildAt (
0
);

}

var arrivee:Number
=
getTimer();

//
affiche :
466
ms

trace( (arrivee
-
depart)
+

"
ms
"
);