I'm new to mobile development and need to build out sub navigation.

I'm guessing there is no hover state like on a desktop browser.

So, normally on a desktop browser on hover i would change CSS to expose sub navigation.

Can someone please point me in the right direction to do that on an iPhone?

My other thought was to apply a class with jQuery when a main nav item is clicked, I can edit styles that way, but does a touch equal a click in the mobile world?