Angular 1 Basic Interview Questions
Angular 1 - Basic Interview Questions
Angular 1 Basic Interview Questions
Angular 1, a popular JavaScript framework, offers an organized and efficient approach to web application development. It provides developers with a set of tools and features that simplify complex development tasks. These tools include a declarative programming style, dependency injection, routing, data binding, and a powerful templating system. Angular 1 simplifies the creation of maintainable and testable web applications, enabling developers to build complex interfaces and manage data flow effectively. It is widely used in enterprise-level applications and has a strong community support, making it a valuable asset for web developers.
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1 - What is Angular and its key features?
Angular is a JavaScript framework used for building single page applications. It offers features like dependency injection, modular architecture, and data binding.
2) Explain the difference between AngularJS and Angular.
AngularJS is the older version of Angular, while Angular is the latest version. Angular introduces new features like improved performance, TypeScript support, and the reactive programming model.
3) What is a component in Angular?
A component represents a reusable and encapsulating part of an application. It consists of a template, a class, and optional styles.
4) What are the advantages of using directives in Angular?
Directives allow you to extend HTML elements or create new ones. They provide a declarative way to add behavior and manipulate the DOM.
5) Explain the role of services in Angular.
Services provide shared functionality across components and modules. They handle tasks like data fetching, API interactions, and business logic.
6) What is dependency injection and how is it used in Angular?
Dependency injection is a design pattern that simplifies object creation and wiring. In Angular, it is used to inject dependencies into components, services, and other objects.
7) What are the differences between @Component, @Injectable, and @NgModule?
@Component defines a component template and class, @Injectable designates a service, and @NgModule groups related components, providers, and declarations.
8) Explain the concept of data binding in Angular.
Data binding allows components to communicate with each other and with the template. It enables data flow between the component's properties and the HTML elements.
9) What is the ngOnInit() lifecycle method and when should it be used?
ngOnInit() is a lifecycle method that is called once the component is initialized. It is commonly used for tasks like fetching data or subscribing to events.
10) What is the difference between a parent component and a child component?
A parent component contains a child component. Parent and child components can communicate through data binding and events.
11 - Explain the purpose of routing in Angular.
Routing provides a mechanism for navigating between different views or pages in an application. It allows you to define routes and associate them with components.
12) What is an observable in Angular and how is it used?
An observable is a stream of events or data that can be subscribed to and processed. In Angular, it is commonly used for asynchronous operations like fetching data from a server.
13) What is the Angular CLI and what are its benefits?
The Angular CLI is a command line interface that helps developers with project creation, code generation, and testing. It simplifies and streamlines development tasks.
14) Explain the concept of modules in Angular.
Modules group related components, services, directives, and pipes. They provide a way to organize and compartmentalize code, improving maintainability.
15) What are some best practices for writing Angular code?
Best practices include following the Angular style guide, using lazy loading to optimize performance, and utilizing unit testing for code verification.
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- Course Overview
- This comprehensive course provides a thorough grounding in the fundamental concepts of Angular 1, making it ideal for candidates preparing for basic interview questions. It covers essential topics such as the Angular architecture, directives, data binding, services, routing, and testing, equipping participants with the knowledge and understanding necessary to excel in technical interviews for entry-level or junior-level Angular roles.
- Course Description
- This course provides a foundational understanding of the core concepts and essential interview questions for Angular 1, a popular JavaScript framework for building dynamic web applications. Through a series of concise and informative lessons, it covers key topics such as modules, components, services, directives, and routing, equipping you with the necessary knowledge to confidently navigate Angular 1 interviews and demonstrate your proficiency in this essential web development framework.
- Key Features
- 1 - Comprehensive Tool Coverage: Provides hands-on training with a range of industry-standard testing tools, including Selenium, JIRA, LoadRunner, and TestRail.
- 2) Practical Exercises: Features real-world exercises and case studies to apply tools in various testing scenarios.
- 3) Interactive Learning: Includes interactive sessions with industry experts for personalized feedback and guidance.
- 4) Detailed Tutorials: Offers extensive tutorials and documentation on tool functionalities and best practices.
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- 10) Up-to-Date Content: Ensures that course materials reflect the latest industry standards and tool updates.
Benefits of taking our course
Functional Tools
1. Angular CLI:
Command line interface for creating, developing, and testing Angular applications.
Provides scaffolding for new projects, generates code, and runs build and development processes.
2. Angular Material:
UI component library that provides common, reusable GUI elements such as buttons, inputs, and cards.
Enhances the user experience with pre styled, consistent components.
3. TypeScript:
Superset of JavaScript that adds static typing to Angular applications.
Helps prevent errors, improves code readability, and provides autocompletion features.
4. RxJS:
Reactive programming library that helps manage asynchronous operations and data streams.
Used for handling data fetching, event handling, and state management.
5. NgRx:
State management library for Angular applications, based on the ReactiveX principles.
Provides a centralized store for application data and ensures consistent state across components.
6. Angular Router:
Module for managing navigation within an Angular application.
Allows for easy definition of routes and components associated with those routes.
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