Hello Everyone,
I must salute the creators of DynAPI for creating such
a fascinating API. I really like the object structure
and it's easy-of-use. But there's something that I'm
concerned about, and that's speed!
What good is a pickup-minivan if it doesn't have
sufficient horse power?
After doing some testing on my pentium 200 (yes 200
MHZ) using IE5.0, I've found DynAPI to be very slow
when creating x number of layers.
example:
for(var a=1;a<=2;a++){
y=y+22
for (x=1;x<=20;x++){
myLayer = new DynLayer(null,21*x,y,20,20,"#C0C0C0")
DynAPI.document.addChild(myLayer)
}
}
The above code will create 40 layers within 1-2
seconds. The more layers you add the longer it will
take to create another 40 layers. In other words, if
you should have say 100 layers on screen and then try
to add another 40, its takes a longer time to add the
40 layers than it would at the beginning.
I've also noticed that a page takes a very long time
to unload or reload if there are a lot of layers on
the screen.
The findLayers() function is just as slow when trying
to find x number of inline layers.
Layers are the heart of DynAPI. They're used in about
99% of the objects created for use with the API. For
example let's say I want to create a dynamic web form
that uses 40 Labels. With each Label using at least 2
DynLayers it who take a normal computer a very long
time to generate the 40 Labels (80 layers), not to
mention Buttons and other widgets that I may use.
The long and short of it is that DynAPI really needs
to do something about the speed at which layers are
created and the amount of browser-resources to
maintain a layer.
A true state of the art web application will use over
100 layers at any one time. As a result of this a few
questions come to mind:
1) How long will it take for DynAPI to create x number
layers?
2) How many layers can DynAPI handle before slowing
down the creation of over layers?
3) How long will it take for DynAPI to unload a page?
If any one knows of a way to speed up layer creations
please let me know about it.
P.S. I do hope the developers are on this list.
Best regards,
Raymond
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