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Angular JS Objective Questions and Answers

Test your AngularJS knowledge with carefully curated multiple-choice questions covering core concepts such as ng-app, directives, modules, dependency injection, MVC architecture, expressions, services, providers, and application initialization.

Practice Angular JS MCQs with Detailed Explanations

Answer at least 12 questions to submit and verify answers.

1 Which of the following is true about ng-app directive?

ng-app directive defines and links an AngularJS application to HTML.

ng-app directive indicates the start of the application.

Both of the above.

None of the above.

2 How angular.module works?

angular.module is used to create AngularJS modules along with its dependent modules.

angular.module is primarily used to create application module.

Both of the above.

None of the above.

3 Which of the following is true about ng-init directive?

ng-init directive initializes an AngularJS Application data.

ng-init directive is used to put values to the variables to be used in the application.

Both of the above.

None of the above.

4 Which of the following directive is used to initialize an angular app?

ng-model

ng-app

ng-controller

None of the above

5 AngularJS expressions are written using.

small bracket like (expression)

double braces like {{ expression}}

single braces like {expression}

capital bracket like [expression]

6 Angular initializes based upon which of the following scenario?

DOMContentLoaded event happens

document.readyState is set to complete

Both of the above

None of the above

7 With more than one ng-app in an HTML document (an HTML page), are all of them automatically initialized?

Yes

No, only one app is automatically initialized. Others have to manually initialized.

None of the above

8 What are various possible prefixes such as ‘ng-‘ using which Angular directives (for example, ng-app) can be defined?

'ng-', 'data-ng-', 'ng:'

'ng-'

'ng-', 'data-ng-', 'ng:', 'x-ng-'

'ng-', 'data-ng-', 'x-ng-'

9 What are various possible ways in which angular application can be initialized?

On an element, one could either put simply the attribute such as (ng-app, data-ng-app, ng:app, x-ng-app)

Put the named attribute such as (ng-app=’demoApp’)

Both of the above

None of the above

10 What angular function is used to manually start up an angular application?

angular.bootstrap

angular.element

angular.copy

None of the above

11 Which components can be injected as a dependency in AngularJS?

Application Module

constant

value

factory

12 Which of the following is true about AngularJS service?

Services are JavaScript functions.

Services are responsible to do specific tasks only

Inbuilt services are always prefixed with $ symbol.

All of the above.

13 What is View in MVC?

View represents a database view.

View is responsible for displaying all or a portion of the data to the user.

View is responsible to act and process the data.

None of the above.

14 Which of the following is true about $error?

$error states that form has invalid data.

$error states the exact error.

Both of the above.

None of the above.

15 Which of the following is true about provider?

provider is used by AngularJS internally to create services, factory etc.

provider is used during config phase.

provider is a special factory method.

All of the above.

16 Which of the following is true about ng-bind directive?

ng-bind directive binds the AngularJS Application data to HTML tags.

ng-bind updates the model created by ng-model directive to be displayed in the html tag.

ng-bind updates html control data when controller changes the model.

All of the above.

17 Which of the following is true about $dirty flag?

$dirty flag states that value has been changed.

$dirty flag states that form has invalid data.

Both of the above.

None of the above.

18 At framework level, how does Angular retrieve the matching elements for processing?

Makes use of jqLite(element) function.

If jQuery is used, jQuery(element) is used by way of assigning jQuery to jqLite variable.

Both of the above

None of the above

19 Directives can be applied to which all element type?

Element

Attribute

Class

All of the above

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

$param

$control

$scope

$scont

21 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 which of the following?

SQL injection attacks

JS injection attacks

HTML injection attacks

Python injection attacks

22 First the HTML document is loaded into the browser, and evaluated by the browser. At this time the AngularJS does which of the following?

JavaScript file is loaded.

the angular global object is created.

your JavaScript which registers controller functions is executed.

all of above

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