从骨干或openui5等其他框架的角度理解Angularjs

This question might have been asked a million times but unfortunately I am not able to find answers and hence request your help. I am coming from other frameworks like backbone, backbone-marionette and openui5 and now trying to learn angularjs as it seems to be more flexible and feature rich than other frameworks besides the vast community behind it. But I am not able to get few concepts right at all, no matter how many tutorials I go through or how man courses I read. Please have a look at below image. I will ask my questions in comparison to other frameworks and how I would have done it in other frameworks and may be angular gurus can help me understand how it is done in angular This question might have been asked a million t