11 Sample Angular Interview Questions and Answers
Angular is the leading software development platform for growing interactive and dynamic single-web page apps and is regularly utilized by each internet builders and pc programmers. If you’re looking for a process in net or software development, be organized to answer Angular interview questions. Monster will walk you through the questions about Angular you would possibly get asked and the way you could solution them.
There is a high call for for computer experts who own Angular abilties. For example, the Bureau of Labor Statistics initiatives an growth of 23% in new net development jobs over the subsequent ten years.
If you’re experienced with Angular, you likely already mentioned it in your net developer resume. However, employers will want to realize more about your Angular experience if it’s an essential part of your new position. To help you show your Angular know-how, we’ve outlined 11 sample Angular interview questions and answers beneath. Take a while to exercise responding to each query, so you know what you’re going to say earlier.
Eleven Angular Interview Questions
Tell Me What You Know About Angular.
What Are the Building Blocks of an Angular Application?
What Is TypeScript?
Explain How Data Binding Works in Angular.
What Is AngularJS and How Does It Differ From Angular?
What Is the Scope in AngularJS?
Describe How Routing Works in AngularJS.
Walk Me Through the AngularJS Bootstrap Process.
How Does Angular 8 Differ From Previous Versions?
Describe the Angular 8 Architecture.
Explain What Bazel Does in Angular eight.
Fundamental Angular Interview Questions
First, we’ll start with the essential Angular interview questions employers will ask. These consist of the basics and constructing blocks of Angular, TypeScript, and information binding.
Question #1: Tell Me What You Know About Angular.
First and major, employers will ask you to illustrate your basic understanding of Angular. Create your solution with the aid of such as the subsequent details:
A brief evaluation of Angular.
Why developers use Angular.
The key functions of Angular.
How You Could Answer
“Angular is a unfastened and open-supply TypeScripted-based totally web application framework. Google launched it in 2016 to create unmarried-page applications the usage of TypeScript, HTML, CSS, and the Angular command-line interface device.
Angular’s steady shape permits developers to create net pages and single-page apps without having to rebuild code from scratch. It also provides a comprehensive model-view-controller framework and record object version, so developers apprehend the correct structure of an utility.”
Question #2: What Are the Building Blocks of an Angular Application?
Angular makes use of precise constructing blocks that make it particular in the web dev device space. While this seems like a easy query, your answer will show your skillability in Angular programming.
When developing your solution, make sure to pick out and explain the following info:
The six building blocks in Angular applications.
The purpose of every constructing block.
How You Could Answer
“An Angular software ought to encompass six key constructing blocks: modules, components, templates, metadata, offerings, and dependency injection. More particularly:
An Angular app should have a root module to provide the bootstrap mechanisms to release it. This is also called “AppModule.”
Angular applications incorporate components that define the training that maintain the app facts and good judgment. Components additionally define a part of the person interface.
Templates use records binding to mix Angular markup with HTML. This modifies HTML elements earlier than showing them on an internet page or app.
Angular makes use of metadata to method training and configure their expected behavior.
Angular creates a provider magnificence while records and/or good judgment isn’t related to a view but must be shared throughout additives.
Lastly, dependency injection streamlines the usage of factor instructions with out fetching information from a server, logging to the console, or validating consumer input.”
Question #3: What Is TypeScript?
Since Angular works with TypeScript, employers will in all likelihood ask for an outline of it. Your solution have to include:
A definition of TypeScript.
How it really works.
Why developers opt for it over other programming languages.
How You Could Answer
“TypeScript is a high-stage programming language developed with the aid of Microsoft. It’s a superset of JavaScript and the number one programming language for Angular. TypeScript makes use of static typing, which makes variables regarded at collect time. Additionally, TypeScript enables developers resolve coding problems and display styles of statistics in a way that JavaScript does now not. It’s also converted into JavaScript using the TypeScript compiler.”
Question #4: Explain How Data Binding Works in Angular.
Data binding is an Angular technique that impacts how factors seem at the user interface. When employers ask Angular interview questions on data binding, make sure to give an explanation for:
What information binding is and what it does.
When developers generally use records binding.
The two types of statistics binding.
How You Could Answer
“Data binding creates a connection among an software’s consumer interface (UI) and the corresponding records. Once the statistics values alternate, the UI elements also alternate. Developers use information binding on net pages and apps which have forms, games, tutorials, and other interactive additives.
Angular uses styles of data binding: One-manner facts binding and -manner facts binding. In one-way data binding, the information flows in a single course. This happens when developers display information on a UI with out the want to update it. In two-manner records binding, the statistics flows in each guidelines. Developers use it to regularly update statistics that looks in UI elements.”
AngularJS Interview Questions
Before Angular, there was AngularJS. Below, you’ll find Angular interview questions on AngularJS, the very first version of the net development platform.
Question #five: What Is AngularJS and How Does It Differ From Angular?
While AngularJS shares some similarities with Angular, it has many key variations. Respond with the following records in thoughts:
A description of AngularJS.
The key purposes of AngularJS.
How AngularJS compares to Angular.
How You Could Answer
“AngularJS is a based framework for developing dynamic web pages and apps. Google released it in 2010 because the first version of the Angular framework. However, Google lately discontinued aid for AngularJS and has recommended the ultra-modern Angular model.
AngularJS differs from Angular as it supports JavaScript in place of TypeScript. Plus, developers most effective use AngularJS to create internet apps, at the same time as they use Angular for both net and cellular apps. AngularJS additionally doesn’t use dependency injections or include a command-line interface like Angular.”
Question #6: What Is the Scope in AngularJS?
The Scope is fundamental for binding JavaScript functions and HTML elements. If you’ve labored with AngularJS earlier than, you ought to have a full understanding of ways the Scope works. Demonstrate your information of the Scope to your solution by means of consisting of the following information:
The motive of the Scope.
What the Scope contains.
The two kinds of scopes and what they do in AngularJS.
How You Could Answer
“In AngularJS, the Scope binds application records from HTML (view) and the JavaScript characteristic that controls statistics (controller). The Scope additionally contains app data and items. AngularJS has two styles of scopes: $Scope and $rootScope.
Developers skip $scope as a controversy while growing a controller in AngularJS. The houses made in a controller can then be stated in a view, allowing HTML to get get admission to to them. All AngularJS packages have a $rootScope, which builders create on the HTML detail containing an ng-app directive.”
Question #7: Describe How Routing Works in AngularJS.
Routing is vital for user navigation in each AngularJS and Angular. If a hiring supervisor asks you Angular interview questions about routing, here’s what you should talk about:
A description of what routing does.
Why developers use routing.
How You Could Answer
“Developers use routing in AngularJS to allow users to navigate to unique pages within an app. With routing, customers create a couple of URLs for one-of-a-kind content within an app. The $routeProvider API configures routes within an app by accepting the while() or in any other case() method. It additionally facilitates to define which pages to display when customers click on hyperlinks.”
Question #8: Walk Me Through the AngularJS Bootstrap Process.
From AngularJS to Angular 14, every model plays a bootstrap procedure. AngularJS uses two techniques: automatic and manual. When you’re asked Angular interview questions on how bootstrap works in AngularJS, be sure to offer the subsequent information to your answer:
The use of the ng-app directive within the automatic method.
The angular.Bootstrap() function inside the guide technique.
A short description of how each system differs.
How You Could Answer
“In the automatic method, AngularJS first desires the ng-app directive, the basis of an angular app compilation, which defines the AngularJS part inside a Document Object Model (DOM). Once AngularJS identifies the ng-app directive, it'll load a module connected to the directive, create an software injector, and bring together a DOM deriving from an ng-app root element.
Some builders pick the manual bootstrap method, which starts with the angular.Bootstrap() feature. This characteristic then gets known as in the angular.Element(record).Ready() characteristic, which indicates that the DOM is ready for manipulation. Unlike the automated technique, the manual procedure ought to no longer use the ng-app directive.”
Angular 8 Interview Questions
This closing phase will cowl Angular interview questions on the 8th version of the platform. That includes the way it differs from preceding versions, the Angular8 structure, Bazel, and reactive paperwork.
Question #9: How Does Angular 8 Differ From Previous Versions?
Google released Angular eight in 2019. Even although it’s now not the present day version, it’s nevertheless extensively used amongst builders. When requested Angular interview questions about model eight, provide the subsequent details:
How Angular eight compares to Angular 7.
Features that make Angular eight different from previous variations.
How You Could Answer
“Angular eight comes with many functions that preceding variations don’t. For instance, it works with TypeScript 3.4, while Angular 7 works with TypeScript 3.1. It uses lazy loading, which permits developers to load JavaScript additives asynchronously upon activation of particular routes. Angular 7 truely uses drag and drop.
Additionally, Angular 8 comes with progressed ng upgrades, including the ng-new command that builds initiatives with Bazel. Other key functions that differentiate Angular 8 from preceding versions are its network robots, dynamic imports, differential loading, Angular Ivy Support, builder and workspace APIs, and choose-in utilization sharing.”
Question #10: Describe the Angular eight Architecture.
Each model of Angular makes use of a specific architecture for app development. When employers ask you to explain the structure of Angular 8, be very precise along with your solution. For example, you ought to discuss:
The 8 key parts of Angular 8.
A description of what every part does in Angular 8.
How You Could Answer
“Angular 8’s architecture incorporates 8 key components: modules, components, templates, meta-information, data binding, directives, services, and dependency injection. More especially:
All Angular 8 apps have a root module called “AppModule.” This affords the bootstrap mechanism that Angular uses to release packages.
Each Angular app has as a minimum one root thing that hyperlinks a page hierarchy with a page DOM.
Templates in Angular 8 serve two functions: they combine HTML with Angular Markup and modify HTML elements before displaying them.
The meta-statistics for issue instructions buddies them with a template that defines views. Meta for provider lessons provides Angular with facts to them to be had to additives through dependency injection.
Angular eight makes use of types of information binding. Event binding binds app activities and updates app data to reply to person input in the goal environment. Property binding passes records from a thing class and enables interpolate values from the app data to HTML.
Directives outline lessons that upload new behaviors to template factors and regulate present behaviors.
Angular eight uses carrier training for facts and logic that aren’t related to a positive view. Service classes additionally allow unassociated information to be shared across all additives.
Dependency injection makes aspect classes extra green and lean by rendering certain tasks to offerings.”
Question #eleven: Explain What Bazel Does in Angular 8.
If you’ve ever worked with Angular 8, you’re probable familiar with Bazel. When requested Angular interview questions on Bazel, here’s the way to pleasant structure your solution:
Provide a quick description of Bazel.
Explain why developers use it.
How You Could Answer
“Bazel is one in every of Angular eight’s key capabilities. It’s a complicated build and check device that streamlines the improvement of command-line interface programs. It lets in builders to:
Use the same device to construct the front-ends and back-ends.
Declare obligations with clean inputs and outputs.
Have far flung builds and cache on the build farm.
Utilize dynamic imports for lazy-load modules.”
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