This part of AngularJS tutorials will be covering the following topics:
AngularJS for Beginners
This AngularJS tutorial includes Introduction, Installation, MVC, AngularJS First Application, Directives, Controllers, Expressions, Filters, Tables, DOM, Modules, Forms, Events, Validation, Dependency Injection, AngularJS API, Includes, Custom Directives, AngularJS Application so you learn AngularJS the right way. This AngularJS tutorial also includes practical use cases of AngularJS. This AngularJS is your first step to learn AngularJS.
This technology has gained immense popularity because of the following reasons:
- AngularJS applications are supported by different browsers
- Uses data-binding for providing synchronization between model and view layers
Angular was created by two developers named Adam Abrons and Misko Hevery as a side project. They envisioned the project GetAngular with an aim to simplify web development and allow web designers to interact with both backend and frontend. Misko Henery was a developer at Google, while Adam Abrons who was working with Henery on a Google project, named angular after HTML as HTML contains angular brackets.
Hevery was working on a Google project named Google Feedback with two more developers in the team. Over 6 months, they’ve written 17000 lines of code. However, with the increased code size, it became very difficult to modify and test the code which the team has written. So, Henry bet his manager that he can write the entire with his side project in just two weeks.
He lost the bet and took three weeks to finish writing the code, but he was able to squeeze the 17000 lines code down to 1500. His manager took notice of his achievement and the development of Angular.js began to accelerate.
- Angular apps are built using the TypweScript language, which eliminates the errors while writing the codes and ensures high performance and security.
- Provides two-way binding which provides a seamless synchronization between the modes and the view. It updates these components in real-time in case the data is modified.
- The time investment in Angular for the projects is less as compared to other web development frameworks. The Angular CLI tool allows the developers to create initial projects, perform testing, and integrate features in the same.
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Angular vs. Node.js
Below are the key differences between Angular and Node.js frameworks:
|It’s an open-source web development framework from Google.
|Angular is best suited for building single-page web applications.
||Used for building fast and scalable server-side applications.
||Has different frameworks like Express.js, Sails.js, and Partal.js.
|Used to create interactive web applications.
||Used in the development of small-scale projects.
|Useful for creating real-time applications like messengers.
||Used in situations where fast and scalable development is required.
How is AngularJS better than jQuery?
||Built for Single Page Apps
||Built mainly for DOM Manipulation
||Provides a lot of interactivity
||Provides little interactivity
||Has a framework
Watch this insightful video on Angular vs React vs Vue:
Versions of Angular
Angular1.0 was the first version of Angular and was released in the year 2010. After that, Angular2.0 was introduced in 2014 and it was a complete rewrite of the previous version, but it created a controversy among the developers. In April 2015, the developers moved angularly from the alpha to the developer’s preview and launched a beta version in December 2015.
Angular 3 was skipped due to some confusion and Angular 4 was released in the year 2017.
It was smaller in size and came with additional features like HttpClient and also supported conditionally disabled animations. Angular 5 was released at the end of 2017 with a minor update.
The next version, Angular 6 was released on May 4th, 2018. It came with major updates and features like CLI workspace, library support, ng add, ng update, Angular material starter components, Angular element, etc. However, Angular 7 was released in October 2018 which improved both the performance and efficiency of the framework.
Following the trend, Angular 8 was released in May 2019, Agular 9 in February 2010, Angular 10 in June 2020, and Angular 11 in November 2020, which is the latest version of Angular.
Features of Angular
Angular framework support multiples platforms which help the developers to create different types of applications Desktop, Native, and Progressive web applications. Angular provides great performance for the following reasons:
- Code Splitting: With the help of component routing, the user can perform automatic code-splitting. So that, only the code required to render is loaded.
- Univeral Support: Angular can be used for various programming languages for front-end development and servers for near-instant rendering in HTML.
- Productivity: Angular provides powerful templates for quick UI creation and Angular CLI offers command-line tools for faster development and deployment.
- Accessibility: Angular provides ARIA-enabled components, built-in testing architecture, and developer guides to create accessible applications.
- Animation Support: Create high-performance animation timelines by writing less code.
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AngularJS vs. Angular
Below are the key differences between AngularJS and Angular:
||Written in typescript
||Based on MVC, Model View Controller architecture.
||Use components and derivatives.
||DI is not used
||Angular use Hierarchical DI.
||Developed applications are not mobile-friendly.
||Developed applications are mobile-friendly.
||Difficult to manage projects with huge source codes.
||The codes are well structure, which makes bigger projects easy to manage.
Watch the Youtube video to learn more about Angular JS vs. Angular:
Getting Started with Angular
Angular is used to build single-page applications and features with declarative templates. The developers can build the applications and reuse the code to build other applications. Angular has a learning curve similar to a hockey stick, which means starting with the framework is easy. However, building complex applications require more effort and understanding of Angular’s framework.
Let’s check the prerequisites to install and start using the Angular framework:
Prerequisites for Angular
Before starting with Angular, it’s better if you have sound knowledge of the following concepts and languages:
- Basic knowledge of the Document Object Model(DOM)
- Model-View-Controller(MVC) concepts
- Knowledge of Node JS and Node Package Manager(npm)
- Angular CLI
- Libraries such as Rx and JS
- Error handling
- Windows 10 or similar Operating System
- At least 10GB of free storage space
- Minimum 4GB of RAM
- An editor like VSCode to write ad edit your codes
- Node JS version 8 or 10, preinstalled in your system. You can check the Node.js version using the node -v command
Step-1: Installing Angular CLI
You can install Angular CLI using the console/terminal window by entering the following command:
The angular CLI is used to create library codes, projects, and applications and perform various tasks like testing, bundling, and deploying the applications. You can verify the version of your Angular CLI with the ng –version command.
Step-2: Create a workspace
AN angular workspace contains the files, codes, libraries, and projects. To create a new workspace, type in the following statement in the CLI command:
ng new my-app
This command ng new installs all the necessary packages, files, and dependencies and creates a workspace by the name ‘my-app.’ In this workspace, the following project files are created:
- Root folder names my-app
- Skeleton project in the src directory
- End-to-end test project
- Other configuration files
The workspace contains the initial project with a welcome application. Now, you’re ready to create your first Angular component and serve the application.
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