Top 10 AngularJS Interview Questions and Answers

Most asking Top 10 AngularJS Interview Questions and Answers. Please read below questions and answers.

Q#1. What is AngularJS?

A#1. AngularJS is a framework to build large scale and high performance application.

AngularJS is a very powerful JavaScript Framework.
It is provides developer to write a client side application in MVC method.
Open source and free. And used by many developers and tested.

Q#2. What are the controllers in AngularJS?

A#2. Controllers are JavaScript functions. They decide which view is to be updated to show the updated model based data.

Q#3. What are filters in AngularJS?

A#3. Filters select a subset of items from an array and return a new array. Filters are used to show filtered items from a list of items based on defined criteria.

Q#4. What is routing in AngularJS?

A#4. ngRoute module you can use to navigate the pages in AngularJs.

Example from w3school

<body ng-app="myApp">

<p><a href="#/!">Main</a></p>

<a href="#!red">Red</a>
<a href="#!green">Green</a>
<a href="#!blue">Blue</a>

<div ng-view></div>

<script>
var app = angular.module("myApp", ["ngRoute"]);
app.config(function($routeProvider) {
    $routeProvider
    .when("/", {
        templateUrl : "main.htm"
    })
    .when("/red", {
        templateUrl : "red.htm"
    })
    .when("/green", {
        templateUrl : "green.htm"
    })
    .when("/blue", {
        templateUrl : "blue.htm"
    });
});
</script>
</body>

<a href="#!green">Green</a>

var app = angular.module("myApp", ["ngRoute"]);

app.config(function($routeProvider) {

$routeProvider

.when("/", {

templateUrl : "main.htm"

})

.when("/red", {

templateUrl : "red.htm"

})

.when("/green", {