I have a question concerning how do spiders index html written using Javascript (or any other scripting language). Do they totally ignore javascript content and proceed as if they are not there? Or do they actually detect dynamic content written using Javascript and index them? Thank you
AFAIK they'll only index what's on the page. So if your content is actually embedded within JavaScript that's on the source code of your page, you're good. If it's like AdSense - comes from an external source and is NOT visible in the source of your page - it won't be indexed.