Deleting and replacing layers

Question

So I'm trying to create a fairly simple script that will measure the size of art on the artboard for making printing plates. That part I have working. But once I have made one file, I have to delete the measurements layer manually (which is where the script puts them) so that I can make the next one. I need the script to check and see if there is a layer called "measurements" delete it and then create a new one called "measurements" in which to put the dimensions of the (new) artwork. This way I can keep making files and "saving as" with a new name.

Answer 1

here's a sample
var idoc = app.activeDocument;
// try removing the layer, regardless whether it exists or not
try {
    var ilayer = idoc.layers["measurements"]; // if it does not exist, it will error out....
    ilayer.remove();
} catch(e) { } // ....and continue here, doing nothing
// add a new layer
var ilayer = idoc.layers.add();
ilayer.name = "measurements";