NativeScript for Mobile App Development Data Binding and MVVM 1

Question 1

What pattern does NativeScript natively support for separating UI and business logic?

Accepted Answer

MVVM (Model-View-ViewModel)

Answer

MVC (Model-View-Controller)

Answer

MVP (Model-View-Presenter)

Answer

Flux

Question 2

Which NativeScript class must a ViewModel extend to support data binding?

Accepted Answer

Observable

Answer

EventEmitter

Answer

BindingContext

Answer

DataSource

Question 3

How is two-way data binding expressed in NativeScript XML?

Accepted Answer

{{ property }} with `text` and setting bindingContext

Answer

Using [( )] syntax

Answer

Using v-model directive

Answer

Using formControl directive

Question 4

What property on a NativeScript Page sets the data source for binding?

Accepted Answer

bindingContext

Answer

dataContext

Answer

viewModel

Answer

model

Question 5

What method on an Observable object triggers property change notifications?

Accepted Answer

set(propertyName, value)

Answer

notify(propertyName, value)

Answer

emit(propertyName, value)

Answer

update(propertyName, value)

Question 6

In NativeScript Angular, which directive binds a component property to a UI element's property?

Accepted Answer

[property]

Answer

Answer

(property)

Answer

#property