{"id":1011,"date":"2018-08-08T03:26:11","date_gmt":"2018-08-08T03:26:11","guid":{"rendered":"https:\/\/www.gologica.com\/blog\/?p=1011"},"modified":"2025-04-06T02:03:21","modified_gmt":"2025-04-06T02:03:21","slug":"angularjs-interview-questions","status":"publish","type":"post","link":"https:\/\/www.gologica.com\/elearning\/angularjs-interview-questions\/","title":{"rendered":"AngularJS Interview Questions"},"content":{"rendered":"

What is AngularJS and what are some of its advantages?<\/strong>
\nThis question might seem basic at first glance, but what you\u2019re really doing is giving the developer a chance to show you what they know about your chosen framework. AngularJS is a powerful JavaScript-based development framework designed to create dynamic single-page applications with fewer lines of code. Some of the key advantages that you\u2019ll want to look for in their response are listed below.
\nData binding is as easy as writing in your code.
\nAngularJS was made for CRUD applications, which happen to represent the majority of web apps (excluding DOM manipulation-intensive applications like games and GUI editors).
\nIt separates DOM manipulation from app logic, making code modular and easy to test.
\nIt\u2019s a comprehensive client-side solution in that it decouples the client-side from server-side development effort.<\/p>\n

What is the Model View Controller (MVC)?<\/strong>
\nMVC is a common design pattern used in developing software that consists of three parts: the model, view, and controller. The model is the lowest level of the pattern and is responsible for maintaining data. The view is the part of the application that is presented to the user. The controller is the code that governs all interactions between the model and the view.<\/p>\n\n\n\n
\n
Are you Looking for Angular JS Online Training? Please Enroll for Demo Angular JS..! <\/a><\/strong><\/h5>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

What is data binding in AngularJS? How does it relate to the MVC architecture?<\/strong>
\nIn most tinplating systems, data binding is unidirectional. When the model and template components are merged together, it creates a view. However, the developer must write code to constantly synchronize the model and the view. AngularJS uses two-way data binding, where any changes to the view will automatically update the model and vice versa. The view is more or less just a projection of the model, which greatly simplifies things from the programmer\u2019s perspective.<\/p>\n

Explain the concept of scope. How does scope inheritance work in AngularJS?<\/strong>
\nScope is an object that represents the data-model of an AngularJS application\u2014it is the glue between the view and the application controller. Scope inheritance closely mimics the DOM structure of the application. With the exception of isolated scopes created using custom directives, scopes follow prototypal inheritance. The code block below demonstrates typical scope inheritance.
\nExplain why there are two \u201cdestroy\u201d events associated with the termination of a scope in AngularJS.
\nThe first $destroy is an AngularJS event associated with components like controllers or link functions. The second is actually a jqLite\/jQuery event associated with the removal of a node, which may occur without a scope teardown.<\/p>\n

\"AngularJS<\/a><\/p>\n

What is dependency injection and how does it work?<\/strong>
\nAngularJS was designed to highlight the power of dependency injection, a software design pattern that places an emphasis on giving components their dependencies instead of hard coding them within the component. For example, if you had a controller that needed to access a list of customers, you would store the actual list of customers in a service that can be injected into the controller instead of hardcoding the list of customers into the code of the controller itself. In AngularJS you can inject values, factories, services, providers, and constants.
\nExplain the role of $routeProvider in AngularJS.
\nThe $routeProvider is used to configure roots within an AngularJS application. It can be used to link a url with a corresponding HTML page or template, and a controller (if applicable).<\/p>\n

What are the advantages of AngularJS?<\/strong>
\nThere are following advantages of AngularJS:
\nData Binding \u2013 AngularJS provides a powerful data binding mechanism to bind data to HTML elements by using the scope.
\nCustomize & Extensible \u2013 AngularJS is customized and extensible as per your requirement. You can create your own custom components like directives, services etc.
\nCode Reusability \u2013 AngularJS allows you to write code which can be reused. For example, a custom directive which you can reuse.
\nSupport \u2013 AngularJS is a mature community to help you. It has wide support over the internet. Also, AngularJS is supported by Google which gives it an advantage.
\nCompatibility \u2013 AngularJS is based on JavaScript which makes it easier to integrate with any other JavaScript library and runnable on browsers like IE, Opera, FF, Safari, Chrome etc.
\nTesting \u2013 AngularJS is designed to be testable so that you can test your AngularJS app components as easy as possible. It has dependency injection at its core, which makes it easy to test.<\/p>\n

How is AngularJS different from other JavaScript Framework?<\/strong>
\nToday, AngularJS is the most popular and dominant JavaScript framework for professional web development. It is well suited for small, large and any sized web app and web application.
\nAngularJS is different from other JavaScript framework in following ways:
\nAngularJS mark-up lives in the DOM.
\nAngularJS uses plain old JavaScript objects (POJO).
\nAngularJS is leveraged with Dependency Injection.<\/p>\n

What IDEs can you use for AngularJS development?<\/strong>
\nAngularJS development can be done with the help of following IDEs:
\nVisual Studio 2012, 2013, 2015 or higher
\nEclipse
\nWebStorm
\nSublime Text
\nTextMate<\/p>\n

Does AngularJS has dependency on jQuery?<\/strong>
\nAngularJS has no dependency on jQuery library. But it can be used with jQuery library.<\/p>\n

What browsers does AngularJS support?<\/strong>
\nThe latest version of AngularJS 1.3 support Safari, Chrome, Firefox, Opera 15+, IE9+ and mobile browsers (Android, Chrome Mobile, iOS Safari, Opera Mobile).
\nAngularJS 1.3 has dropped support for IE8 but AngularJS 1.2 will continue to support IE8.<\/p>\n

What is the size of an angular.js file?<\/strong>
\nThe size of the compressed and minified file is < 36KB.
\nIs AngularJS a library, framework, plugin or a browser extension?
\nAngularJS is a first class JavaScript framework which allows you to build well structured, easily testable, and maintainable front-end applications. It is not a library since library provides you limited functionality or has dependencies to other libraries.
\nIt is not a plugin or browser extension since it is based on JavaScript and compatible with both desktop and mobile browsers.<\/p>\n\n\n\n
\n
Are you Looking for Angular JS Online Training? Please Enroll for Demo Angular JS..! <\/a><\/strong><\/h5>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

What browsers AngularJS support?<\/strong>
\nThe latest version of AngularJS 1.3 support Safari, Chrome, Firefox, Opera 15+, IE9+ and mobile browsers (Android, Chrome Mobile, iOS Safari, Opera Mobile).
\nAngularJS 1.3 has dropped support for IE8 but AngularJS 1.2 will continue to support IE8.<\/p>\n

How AngularJS handle the security?<\/strong>
\nAngularJS provide following built-in protection from basic security holes:
\nPrevent HTML injection attacks.
\nPrevent Cross-Site-Scripting (CSS) attacks.
\nPrevent XSRF protection for server side communication.
\nAlso, AngularJS is designed to be compatible with other security measures like Content Security Policy (CSP), HTTPS (SSL\/TLS) and server-side authentication and authorization that greatly reduce the possible attacks.<\/p>\n

\"AngularJS<\/a><\/p>\n

What is core module in AngularJS?<\/strong>
\nThis module is loaded by default when an angular app is started. This module provides the essential components for your angular app like directives, services\/factories, filters, global APIs and testing components.
\nHow angular modules load the dependencies?
\nAn angular module use configuration and run blocks to inject dependencies (like providers, services and constants) which get applied to the angular app during the bootstrap process.<\/p>\n","protected":false},"excerpt":{"rendered":"

What is AngularJS and what are some of its advantages? 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