How to control the number of frames of a specified layer within a symbol through jsfl

[kqskcm]

Implementation using jsfl，Symbol one shows the fifth frame of layer three

[kglad]

layer.frames is read-only so you can't add/remove frames to a layer. you can insert and remove frames from a timeline.

[kqskcm]

The third layer is the symbol，Can you control it to display the fifth frame of a single frame?

[kglad]

i'm not sure what you've done, but you can convert a layer to a symbol (specifically a movieclip) and then you can manipulate that (and every other) moveiclip symbol's timeline by using timeline.cutFrames() and timeline.insertFrames() 

[Vladin M. Mitov]

Hi,

If I understand your question correctly, I think that the property you looking for is called firstFrame. If you want to display frame 5 of the internal timeline of a symbol, its instance on the stage should be graphic.

Then, you can select the instance and execute the following code:

fl.getDocumentDOM().selection[0].firstFrame = 4;

This will set the displayed frame of the selected instance at the current keyframe to 5.

[Vladin M. Mitov]

As an additional advice:
You can open your History Panel, right click on it and choose:
View > Javascript in Panel.
In this way, you'll see all the corresponding JSFL statements when you make changes via the UI.

Also, here is the complete (almost) JSFL documentation.

[kqskcm]

I would like to be able to specify the number of frames in the layer inside the scene control symbol

[kqskcm]

[kqskcm]

so that there is no need to go inside the symbol for control

[kqskcm]

@Vladin M. Mitov Can you take a look at my project file?

[kqskcm]

What if all layers are inside a symbol

[kqskcm]

https://drive.google.com/file/d/1IxivpRcW_XzVpZu939d2Ogx1KnDRU0Rz/view?usp=sharing 

[kqskcm]

[kglad]

see your post, https://community.adobe.com/t5/animate-discussions/how-to-choose-a-specific-layer/m-p/13238484#M3574...

or

var layerIndex = fl.getDocumentDOM().getTimeline().findLayerIndex("your_layer_name");

fl.getDocumentDOM().getTimeline().setSelectedLayers(layerIndex[0], true); 

/* if you have same named layers, index 0 might not be what you want. */

[kqskcm]

https://drive.google.com/file/d/1IxivpRcW_XzVpZu939d2Ogx1KnDRU0Rz/view?usp=sharing 

[kqskcm]