[JS][CS3]Applying Character Style to First Word

Question

I am a noob as far as Javascript  is concerned, and I was hoping for a little guidance.
Here's my scenario: I have a book that has been typeset all in one file; the main content is all in one story. I want to select the first word of every text frame on each page and apply a character style. My goal is to utilize this character style to indicate page breaks in the XML--I'll map the style to a specific tag.
So far I have this poor specimen:
var myDocument = app.activeDocument;
var myPage = myDocument.pages.item(1);
var myTextFrame = myPage.textFrames.item(0);
if( app.activeDocument.stories[0].paragraphs[0].words[0] != null )
myTextFrame.paragraphs.item(0).words.item(0).appliedCharacterStyle =
myDocument.characterStyles.item('foo');
I know, I haven't set up any sort of loop yet (which will be trickier given the fact that there will be blank versos, etc). What I'm trying to do in this is to select the first word in the first paragraph on the second page--which it does in fact do. Problem is, the first paragraph on the second page starts on the first page, so I'm selecting that a word on the first page, not the second page.
As I said, lots of work to do but a little help on getting to the right word would be most appreciated.

Answer 1

Well, you were on the right track, but testing 'myText' fails if there is no text frame on a page because it fails one line earlier
>var myTextFrame = myPage.textFrames.item(0);
just before this, you should test the number of text frames:
if (myPage.textFrames.length > 0)
  ... your stuff ..
Only use this if you are absolutely positive there is just a single text frame on each page! A slightly better way would be to always loop over each textframe:
for (frames=0; frames<myPage.textFrames.length; frames++)
  var myTextFrame = myPage.textFrames.item(frames);
  ..etc.
in which case you also don't have to test its length first (the loop will not be executed if there are zero text frames).
[Techy] Since you have only one continuous story, an even better way would be to loop over the textframes of that story alone. You have to identify the story somehow, and I usually click the text cursor in the one I need:
myStory = app.selection[0].parentStory;
or you can rely on the fact that the story starts in the only text frame on page 1:
myStory = app.activeDocument.pages[0].stories[0];
(I think that oughta work.) Then, each frame of this story up till the end can be found in the array
myStory.textContainers
which are usually text frames. You can loop over these using
for (frame=0; frame<myStory.textContainers.length; frame++)
  myTextFrame = myStory.textContainers[frame];
..etc.