On ios 's web view by clicking, triggers
presentModalViewController:animated: Method pops up a new view controller and then the new view controller call
dismissModalViewControllerAnimated: When you go back to web view, the event on which the web is triggered? Need to capture the status of this return.
I put onfocus on the body, no effect.
It may not be clear that there's a prerequisite: Don't call through native code