Angular

Question 1

Using model variable in HTML

Answer 1

{{name}}

• if name is updated in input field, its value is displayed immediately on the html page.

Question 2

Using expression in HTML

Answer 2

{{expression}}

Question 3

Form validation

Answer 3

When angular validates forms, standard HTML validation should be switched off with form:novalidation attribute.

Question 4

form.FormController

Answer 4

Keeps track of all its controls and nested forms as well as the state of them, such as being valid/invalid or dirty/pristine.

Question 5

$scope

Answer 5

Use in controllers. Access variables in HTML through this object. For example, $scope.name, etc.

• This is how you can alter the content of the page.

gTrack.controller(‘ControllerName’, function($scope) {});

Question 6

$scope.$on

Answer 6

Execute function when a specific event occures.

Question 7

$scope.$on(‘$viewContentLoaded’, )

Answer 7

Execute function when the view has been loaded.

Question 8

$location

Answer 8

A service. Sets/gets the url in te browser. So, good for redirecting.

Question 9

$rootScope

Answer 9

Available for all views.

• Problematic memory wise, use as little as possible

Question 10

Execute something when an event happens

Answer 10

$rootScope.$on(‘event name’, function() )

Question 11

Watch for changes a user variable

Answer 11

$scope.$watch ‘variable’ ->

do something

Question 12

Parameters in URL-s: in HTML

Answer 12

ng-href=”#/checkins/{{a}}/{{b}}”

Question 13

Parameters in URL-s: in route

Answer 13

/checkins/:a/:b

Question 14

Parameters in URL-s: in controller

Answer 14

use $routeParams service

Question 15

keyAt

Answer 15

Returns the Firebase key for a record in the array.

• accepts either an array index
• or a reference to an item that exists in the array

Question 16

Role of $provide is:

Answer 16

registering components with the $injector.

Question 17

When requesting a service, $injector is responsible for (3 things):

Answer 17

• find the correct service provider
• instantiate the service
• call its $get service factory function to get an instance of the service

Question 18

A service is:

Answer 18

• a singleton object, created by a service factory

Question 19

A service factory is:

Answer 19

• a function that is created by a service provider

Question 20

A service provider is:

Answer 20

• a constructor function

- They must contain a $get property that holds the service factory function.