Deck 2: AngularJS: Functions, Directives, and Events

Question 1

Which angular function is used to wrap a raw DOM element or HTML string as a jQuery element?

A)angular.element
B)angular.bootstrap
C)none
D)all

Answer 1

angular.element

Question 2

Can '$scope' be injected while creating service using 'factory' method?

A)Yes
B)No
C)none
D)all

Answer 2

No

Question 3

AngularJS needs data in JSON format to populate its model.

A)true
B)false
C)none
D)all

Answer 3

true

Question 4

Scope act as glue between controller and view.

A)true
B)false
C)none
D)all

Question 5

AngularJS 1.0 was released in 2013.

A)True
B)False
C)none
D)all

Question 6

AngularJS applications are a mix of . . . . . .

A)HTML and PHP
B)HTML and CrossScript
C)HTML and AngularScript
D)HTML and JavaScript

Question 7

We need to tell AngularJS what part of our HTML page contains the AngularJS app. You do so by adding the . . . . attribute to the root HTML element of the AngularJS app.

A)ng-app
B)ag-app
C)js-app
D)aj-app

Question 8

There is a controller which takes single parameter. We call it . . . . . parameter.

A)$param
B)$control
C)$scope
D)$scont

Question 9

The . . . . . . directive is one of the most fundamental directives in AngujarJS. The . . . . . directive inserts the result of an expression into the HTML template.

A)Debug
B)Interpolation
C)Matching
D)Controller

Question 10

First the HTML document is loaded into the browser, and evaluated by the browser. At this time the AngularJS . . . . . . .

A)JavaScript file is loaded,
B)the angular global object is created,
C)your JavaScript which registers controller functions is executed,
D)all of above

Question 11

You cannot use AngularJS directives to tell AnguluarJS how to mix the data into the HTML template.

A)True
B)False
C)none
D)all

Question 12

If the data obtained from the model contains HTML elements, these are escaped before being inserted into the HTML template. The escaping means that the HTML is displayed as text, and not as HTML. This is done to prevent . . . .

A)SQL injection attacks
B)JS injection attacks
C)HTML injection attacks
D)Python injection attacks

Question 13

AngularJS can show or hide HTML depending on the state of data in the model. You do so using a set of AngularJS directives such as . . . . . . which are created specifically for that purpose.

A)ng-shown, ng-hidden
B)ng-show, ng-hide
C)nt-show, nt-hide
D)ng-shows, ng-hides

Question 14

The . . . . . directive is used if you want to add or remove HTML elements from the DOM based on data in the model.

A)ng-switch
B)ng-model
C)ng-Disabled
D)ng-Cloak

Question 15

Event binding can be defined . . . . . . . . .

A)by wrapping the event in (parenthesis)
B)by prefixing it with in
C)by wrapping the event in {curly brackets}
D)by prefixing it with on

Question 16

EventEmitter class acts both as an observer and observable.

A)True
B)False
C)none
D)all

Question 17

Events in Angular 2 behave like normal DOM events. They can bubble up but cannot propagate down.

A)True
B)False
C)none
D)all

Question 18

EventEmitter class's simple interface, which basically encompass two methods . . . . . . . . . can therefore be used to trigger custom events and listen to events as well, both synchronously or asynchronously.

A)exit()
B)superscript()
C)subscribe()
D)emit()

Question 19

Angular framework provides event binding using in-built event as well as custom event. Custom events are the EventEmitter instances. To create a custom event we need to create an instance of EventEmitter annotated by . . . . . . .

A)@Input()
B)@Get()
C)@Output()
D)@Set()

Question 20

EventEmitter class is used by directives and components to emit custom Events.

A)True
B)False
C)none
D)all

Question 21

@Output() myEvent = new EventEmitter();

A)Declares an output property that fires events that you cannot subscribe to with an event binding.
B)Declares an output property that fires events that you can subscribe to with an event binding.
C)Declares an output property that overrides events that you can subscribe to with an event binding.
D)Declares an output property that subscribes events that you can subscribe to with an event binding.

Question 22

. . . . . . . . need to be passed as a parameter in the event callback from the template to capture the event object.

A)$event.start
B)$events
C)$eventobj
D)$event

Question 23

Calling . . . . . . . . on the event prevents propagation.

A)stopEventPropagation
B)preventEventPropagation
C)stopPropagation
D)preventPropagation

Question 24

Events on child elements are propagated upwards, and hence event binding is also possible on a parent element.

A)True
B)False
C)none
D)all