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Angular 8 Tutorial: Step by Step
Updated on 03 July, 2023
6.14K+ views
• 8 min read
Table of Contents
- What is Angular?
- What is Angular 8?
- How to Upgrade Angular 8?
- The Architecture of Angular 8
- What do you understand by Single Page Applications (SPA)
- How to upgrade to Angular 8?
- What’s unique about Angular 8?
- What are the installation prerequisites for Angular 8?
- The Architecture of Angular 8
- Conclusion
- Join upGrad’s Executive PG Programme in Full Stack Development
Angular 8 is an updated version of Angular, with new aspects, an improved feature list, and a host of workflows preferred by Angular developers. You can start learning Angular 8 at home with an Angular 8 tutorial for beginners.
This article will discuss the functions and features of Angular and Angular 8 to learn its framework from scratch.
Angular releases new versions with updates and features to boost developer productivity and application performance. You can start learning Angular 8 at home with a step by step angular tutorial for beginners. Read further to learn angular step by step.
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What is Angular?
Developers may use Angular to make it easier to create dynamic, scalable, and maintainable online apps. The framework includes capabilities such as two-way data binding, which guarantees that changes in the data are automatically reflected in the user interface, and dependency injection, which aids in the management of relationships between various portions of the program.
Angular allows developers to construct complex and efficient web apps by providing a strong collection of tools and architectural principles. The broad documentation and powerful capabilities make it a popular choice for creating modern online apps.
SPAs are web applications that load a single HTML page and dynamically update the content as the user interacts with the application, resulting in a more seamless and responsive user experience.
Angular provides a broad range of features and tools to aid in the creation of numerous areas of applications. It offers capabilities like data binding, dependency injection, routing, form handling, and built-in HTTP support. A large ecosystem of libraries, modules, and community support also exists.
Angular is a client-side, Java-script-based, open-source framework for developing web-based applications, preferably used for creating dynamic Single Page Applications or SPA. To summarise, Angular is:
- An MVC-based structured framework
- A framework to develop Single Page Applications (SPA)
- Supports client-side templating features
- Provides code testing before deployment
What is Angular 8?
Angular 8 is a client-side TypeScript-based structure framed to produce dynamic web applications. The first version of Angular in 2012 was called AngularJS. Angular 8 is the latest version, equipped with an excellent User Interface (UI) Library.
The User Interface (UI) component of Angular 8 is highly efficient in constructing functional, attractive, and consistent web applications and web pages. This framework comes with a tree structure containing parent and child components.
Angular 8 framework helps create responsive websites, allowing web pages to fit any screen size, with extensive device compatibility, including mobiles, tablets, large systems, and laptops.
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How to Upgrade Angular 8?
Here’s an angular tutorial step by step to upgrade to Angular 8
This command will update the Angular core framework and the Angular CLI to the most recent compatible versions. It will also update other dependencies of Angular. After running the command follow the steps given below:
- After performing the update command, you may experience update difficulties or conflicts in your code or configuration files. Angular CLI will address some of these issues automatically, but you may need to resolve any disputes manually.
- After the update procedure, you must ensure that your application is operational. Run your program and thoroughly test it to ensure all features and capabilities work as planned.
- After you’ve made all the required adjustments and handled any issues, thoroughly test your application again to confirm that everything is working correctly with Angular 8.
The Architecture of Angular 8
The Angular Router is in charge of navigating between different views or components in an application. It enables the creation of routes and their association with specific components. The router supports deep linking, slow module loading, and navigation guards for restricting route access.
What do you understand by Single Page Applications (SPA)
A Single Page Application (SPA) is a web application or website that rewrites the current page with updated content without loading new pages from the server.
Single Page Application (SPA) sends data for user interactivity, and the browser renders it to deliver results. The rendering behaviour is quite different from a traditional method which requests to re-render an entire page, but SPA renders it on request with a click. By following the SPA approach, you can enhance the performance of any web application.
How to upgrade to Angular 8?
If you wish to update your outdated Angular framework to Angular 8, run the given command for an easy update.
Ng update @angular/cli @angular/Core
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What’s unique about Angular 8?
Angular 8 contains fresh as well as upgraded versions of previous features. Some of these are:
- Ivy Renderer Engine Support – the new compiler of Angular 8
- Typescript 3.4 or above support
- Dynamic module loading concept
- New build tool Bazel
- Differential loading for optimising performance
- Supports SVG template
- Supports Web Worker
- Improvement of ngUpgra
What are the installation prerequisites for Angular 8?
Install the mentioned prerequisites for the Angular 8 environment:
- Typescript version 3.4 or above
- Latest Node JS, LTA 10.16 or above
- Any IDE like Microsoft Visual Studio 2015 or above or Visual Studio Code
- Angular CLI for running the Angular project
The Architecture of Angular 8
Angular 8 integrates core functionality as TypeScript libraries to introduce in the application. Angular 8 application is made of essential building blocks known as NgModules, providing a compilation context for the components. In addition, there is a root module in Angular 8, which enables bootstrapping.
Some essential parts of Angular 8 architecture are as follows:
1. Templates
The Angular template includes HTML with Angular mark-up, which modifies the HTML elements before displaying it. It provides program logic and binds the mark-up connecting the DOM and application data.
Example:
<div style=“text-align: center”>
<h1>
{{2| power: 5}}
</h1>
</div>
This HTML file has used a template and pipe inside it to convert the values to their desired output.
2. Modules
Angular 8 NgModules vary from other JavaScript modules. Each Angular 8 app can provide a bootstrap mechanism for application launch. Some features of Angular 8 modules are:
- NgModules enables functionality to be imported and used by other modules. For instance, if you want to use the route service in the app, you can import the Route Ng module.
- NgModules import functionality from other NgModules. Example – JavaScript modules
3. Components
Components are the building blocks of the Angular 8 framework. Each component defines a class, which contains logic, data, and application, to bind with the HTML template.
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4. Data binding
Angular makes communication between a DOM and a component. It simplifies the interactive application framework without pushing and pulling data. There are two types of data binding:
- Event binding – The app responds to the user input in the target environment by an application data update.
- Property binding – It interpolates values computed from application data into HTML.
5. Meta-data
In Angular, decorators work as the Metadata. Its primary function is to enhance the class to configure the class’s expected behaviour. For example, users can use Metadata in a class, so the Angular app knows the app component is a component. In addition, metadata can be attached to TypeScript with the decorator.
6. Services
The purpose of using services is to reuse the code. Standard services are created for the codes applicable to more than one component. The decorator provides the meta-data, which permits injecting services into the client component as a dependency. The Angular differentiates a service and element to increase modularity and reusability.
7. Directives
Directives aim to expand HTML elements’ working functionality. There are three kinds of available directives in Angular – Attribute Directives, Structural Directives and Component Directives.
Besides in-built directive, you can create your directive by developing a JavaScript class and applying the @Directive attribute to it. Then, put the behaviour in the class per your business requirements.
8. Dependency Injection (DI)
Dependency Injection in Angular enhances efficiency and modularity. Dependency Injection will not validate user input or fetch data from the server or log directly to the console. Instead, it forwards such jobs to Services.
Conclusion
Angular 8 is a highly accessible solution with its sole focus on technological trends. With frequent updates, the Angular framework continues to become efficient and a preferred platform for web developers.
Angular 8 is a significant release in the Angular ecosystem, introducing several new features and enhancements to improve developer productivity and application performance. The Ivy Renderer, differential loading, and lazy loading provide significant optimizations for faster loading times and improved user experience.
With each new version of Angular, the framework continues to evolve and address the needs of modern web development. Developers need to stay up-to-date with the latest Angular releases and explore the official documentation for a more in-depth understanding and guidance on using Angular 8 and beyond.
Beginners can also learn more about angular 8 by following this angular tutorial for beginners step by step.
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Frequently Asked Questions (FAQs)
1. How long does it take to learn Angular 8?
It takes around 2 to 3 months to learn Angular 8 if you are ready to spend a minimum of 3 to 4 hours every day. Core concepts are essential to learning Angular 8. An efficient Angular 8 tutorial for beginners can help you learn crucial concepts of the framework.
2. Is it possible to learn Angular without knowledge of JavaScript?
It is essential to know JavaScript before learning Angular. Angular and Angular 8 both require understanding JavaScript fundamentals.
3. Can Angular 8 boost my IT career?
Yes! Front-end and full-stack developers with Angular 8 knowledge are being widely sought after in the IT industry; therefore, knowing Angular 8 will boost your career.
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