AngularJS Interview Questions and Answers
A List of top and most frequently asked AngularJS Interview Questions and Answers are properly framed below with latest content. We will be updating our set of AngularJS Interview Questions and Answers on a regular basis so that all the questions are relevant and up to date.
What is two way data binding ?
In Simpler terms, When we change Model view gets updated and when we change View model gets updated. The process of updating the variable value from Model and View collectively is called as Two Way Data Binding.
What is the difference between ng-if and ng-show ?
ng-if –> Does not render the element if condition is not satisfied.
ng-show –> Does render the element but based on condition element will be displayed.
So, to summarize ng-if do not load element in DOM if condition fails but in contrary ng-show will load element and hides it if condition fails.
Why is $rootScope used ?
$rootScope is useful in communicating with different controllers in the application. There will be only one $rootScope per application.
What is $scope ?
Scope are the objects that are referred to Model. Scope is useful to communicate from controller to view.
What are the elements or flags used to validate form data ?
$dirty –> triggers when value is changed
$invalid –> triggers when value is not valid
$error –> triggers the error
What is $routeProvider ?
$routeProvider is the service which handles the configuration and mapping of html, template and controller.
List the AngularJS components which can be injected as dependencies ?
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