For several versions now (Since v1.4.0) it’s been possible to use Cordova (Phonegap) embedded as a component within iOS Xcode projects – with component being named “Cleaver”. Cordova projects themselves actually use Cleaver.
To that end Randy McMillan has created 3 examples using Cleaver. One demonstrating the use of Cleaver as a modal view, another using Cleaver to embed Wikipedia as a searchable component, and a third demonstrating an RSS reader using Cleaver.
You can find the 3 projects through the repository for the modal view example on Github here.
For more details on exactly how to use Cordova as a component in your iOS projects check the docs here.
Phonegap definitely makes for a powerful component to use within your apps with so many plugins, and examples available.