Turn on layer visibility without exact name

Question

Hi all,
This is my first post, and my first attempt to edit javascript for AI, so please bear with me! I am realtively good with actionscript, so I am trying my hand at this to streamline our image exporting process. I am using CS5 on a PC.
We build our illustrator files to be a combination of different layers. Sometimes just one layer is exported at a time, and sometimes layers are combined to form a more complex image. We use layer names with instructions of what layers should be on and off.
An example of the layer naming might look like this:
03 (01-ON, 02-OFF)
02 (01-OFF)
01
I have been able to figure out how to check if there is a note to turn a layer on, my question is how do I select the layer to turn on the visibility without using the exact name of the layer?
In my example, when layer 3 gets exported, it should have layer "01" visible and layer "02 (01-OFF)" not visible. Since our files are always constructed differently (meaning 02 might not always have a note about 01 being off), I can't use the getByName option because I don't have an exact name to call the layer and turn the visibility on. The layers always start with 01, 02, 03, etc. Is there a way to use getByName and only have it look at the first 2 characters of the layer name?
Thanks in advance for any help!

Answer 1

Looking at the way you have set your files up you don't need to know any names while it is possible to do that I think you are just making more work for yourself… All you actually need do is get a ON/OFF list from each layer name as this is ordered…
Edit OK I had a quick go to see if this worked… this appears to what I think you are wanting…
#target illustrator
exportLayerSets();
function exportLayerSets() {
          var doc, lay, visList, i, j;
          doc = app.activeDocument;
          for ( i = 0; i < doc.layers.length; i++ ) {
                    lay = doc.layers[i];
                    lay.visible = true;
                    visList = lay.name.match( /ON|OFF/gi );
                    if ( visList != null ) {
                              for ( j = 0; j < visList.length; j++ ) {
                                        if ( visList[j] == 'ON' ) {
                                                  doc.layers[ i + j + 1 ].visible = true;
                                        } else {
                                                  doc.layers[ i + j + 1 ].visible = false;
                    app.redraw();
                    alert( 'Is this working?' );
                    // EXPORT HERE…
                    lay.visible = false;