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Introduction to Angular Features

Web development, programming languages, Software testing & others

Features

Till now, many versions of angular have come. Angular JS is the first version of angular, and it was launched in the year 2009. Features of Angular JS:

Form validation and animation.

It is a JavaScript framework for building Web Applications.

It allows easy event Handling.

Dependencies Injection.

Built-in routing and Engine.

Support for Data Binding.

Extends HTML support by adding expressions, tags, and Attributes.

After Angular JS, angular 2 comes into the picture with an entirely different framework written in TypeScript. There is no commonality between both frameworks. Because angular 2 is very well structured. Strong support for the external library and many more things. It gives high performance to our application; thus, it minimizes the load time of our pages.

Features of Angular 2

Below are the features of Angular 2:

1. TypeScript

It is a superset of JavaScript, and angular 2 heavily uses TypeScript. TypeScript has gotten much attention because of its ease of use and simplicity. This is the most striking change that angular 2 brings compared to the previous version. ReactJS is also used TypeScript; because of this change, angular 2 has become popular quickly.

Typescript is an open-source programming language that is developed and maintained by Microsoft. It adds optional static typing to the language. As it is the superset of JavaScript, existing JavaScript programs are also valid.

2. Improved Dependency Injection

It is a design pattern that we should have to make our application loosely coupled. Modular component isolation and development are the features that make the dependency injection easy and straightforward to use and implement in angular2.

In angular 2, services are injectable. For this, we use @Injectable annotation to make any class injectable.

Example: Service is an example of a Dependency injection. It is an injectable class that shares data among various classes or applications. It is also responsible for making the server call and getting data to display.

3. Improved Data Binding

Data binding in angular 2 has improved a lot. We do not need to write heavy code; we must wrap our element inside a square bracket.

Types of binding

Interpolation: It displays a component property to a template or view. For this, we use double curly braces. We can say anything using this, i.e., string, number, array, etc.

Property Binding: Property binding allows us to access the element property of HTML directly. We can now assign our variable to the HTML element.

Two-way Binding: This is a combination of property binding and event binding. We can call our method and bind a value to the element property.

4. Directives

Angular 2 provides support for 3 types of directives. These are as follows :

Attribute Directive: It modifies the behavior or appearance of the HTML element.

Structural Directive: This Directive is used to change the element’s structure. It alters the DOM element; using this, we can add, delete and replace the element with a new one. It modified the DOM layout.

Component Directive: We cannot create angular2 applications without components. Now we can look closer at how this component works and what type of metadata it contains.

Performance: The performance of the angular 2 application has improved a lot because of fast change detection and offline compilation. Support for asynchronous templating and dynamic loading helps improve the page load and time.

Support for a Component-Based Architecture: Angular 2 application is entirely based on components. It follows component-based architecture, which makes our code structure easier.

Angular components are part of the module, or we can say that module contains components that implement the application’s business logic. Also, they contain the template which is going to trigger when they are invoked.

Services

Template

Business Logic

Styles and CSS

Application Data

5. Improved Routing

Routing in angular 2 has been improved a lot because of the following reason:

Location service

Navigational Model

URL resolver etc

6. Browser Support

Angular 2 application supports almost all browsers which are as follows:

Chrome

IE 9, 10,11

Safari

Firefox

Android 4.1

Microsoft Edge

7. Cross-Platform

Android

Ios systems

Desktop

8. Mobile Development

Component-based architecture.

Equally useful for the web. Mobile and desktop app.

Support Dependency Injection.

Faster, modern, and highly scalable framework.

Features of Angular 4

After angular 2, angular 4 comes into the picture with a few new features.

Support for email validator

Separate package for animation. Animation moved to new package @angular/animation

Support for if/else statement

Reduced size of generated bundled code by up to 60%

Features of Angular 5

Angular 5 comes up with new improvements, which are as follows :

Update to the HTTP client.

Type checking in the template.

Make AOT the default.

Support for Internationalized date m currency and number pipes.

Zone speed improvements.

Easier to build progressive web pages.

Conclusion

Angular has improved over time in terms of performance, handling events, providing support for different browsers, and type-checking. It is kept on upgrading because of typescript; it has become the most widely used framework for web development.