Let's UnderStand the difference between AngularJs and Angular Versions
Difference Between AngularJs and Angular Versions
AngularJS to Angular, Angular includes both version 2 and version 4, and so on... We compare Architecture, Language, Expression Syntax, Mobile Support, and Routing.
1. Architecture
AngularJS
The architecture of AngularJS is based on the model-view-controller (MVC) design. The model is the central component that expresses the application's behavior and manages its data, logic, and rules. The view generates an output based on the information in the model. The controller accepts input, converts it into commands, and sends the commands to the model and the view.
Angular
Angular uses components and directives. Components are directives with a template.
Angular 2
In Angular 2, controllers and $scope were replaced by components and directives. Components are directives with a template. They deal with a view of the application and logic on the page. There are two kinds of directives in Angular 2. These are structural directives that alter the layout of the DOM by removing and replacing its elements, and attributive directives that change the behavior or appearance of a DOM element.
In Angular 4, the structural derivatives ngIf and ngFor have been improved, and you can use if/else design syntax in your templates.
2. Language
AngularJS
AngularJS is written in JavaScript.
Angular versions
Angular uses Microsoft’s TypeScript language, which is a superset of JavaScript. This has advantages like type declarations, and the benefits of ES6, like iterators and lambdas
Angular 4 is compatible with the most recent versions of TypeScript which have powerful type checking and object-oriented features.
3. Expression Syntax
AngularJS
To bind an image/property or an event with AngularJS, you have to remember the right ng directive.
Angular versions
Angular focuses on “( )” for event binding and “[ ]” for property binding.
4. Mobile Support
AngularJS was not built with mobile support in mind, but Angular, Angular 2, 4, and so on.... feature mobile support.
5. Routing
AngularJS uses $routeprovider.when() to configure routing while Angular uses @RouteConfig{(…)}.
6. Performance
AngularJS was originally developed for designers, not developers. Although there were a few evolutionary improvements in its design, they were not enough to fulfill developer requirements. The later versions, Angular 2 and Angular 4, have been upgraded to provide an overall improvement in performance, especially in speed and dependency injection.
Speed
By providing features like 2-way binding, AngularJS reduced the development effort and time. However, by creating more processing on the client-side, page load was taking considerable time. Angular2 provides a better structure to more easily create and maintain big applications and a better change detection mechanism.
Dependency Injection
Angular implements unidirectional tree-based change detection and uses the Hierarchical Dependency Injection system. This significantly boosts the performance of the framework.
AngularJS (Angular 1) is totally different from the later versions. And the reason for this is that there is a complete rewrite of the Angular framework between Angular 1 and Angular 2.
Angular 2 was released in the year 2016 and it was rewritten from the ground up. So the basic reason for developing Angular 2 is to fix all the issues that Angular 1 had.
since then that initial release of Angular 2 we had a couple of other versions as well i.e. Angular 4, Angular 5…….and Angular 9...12.
Angular 3 was skipped due to internal reasons.
Since we have all these versions of Angular till now so does it mean Angular was reinvented 8 times since Angular one?
The answer to this is No.
This is not the case instead Angular team adheres to the versioning scheme where a new version of Angular is released every six months.
But that new version is not completely rewritten and it does not change everything.
The new version resolves the issue in the previous version and added new features without breaking the existing feature.
Indeed Angular 12 is the same as Angular 2. When we see syntax and philosophy then most of the things are the same.
In simple words, if you know Angular 2 then there is no difficulty in learning Angular 8 or 9, or 12.
Also, you found that there is no big change in syntax, and the syntax is almost the same as in previous versions.
Overall it is the same framework and some minor changes were added to this. So, among the different Angular versions, we have small incremental changes that are backward compatible.
Conclusion:
In the comparison of the Angular versions, we have learned about their breaking changes, performance & the changes in the core structure, and various other deprecations and upgrades. Angular 13 release was within a few months after the release of Angular 12. However, looks like we can expect the next stable version by end of the year.
| Angular v11 | Angular v12 |
|---|---|
| Typescript 4.0 | Typescript 4.2 |
| Webpack 5 Support | Webpack 5.37 Support |
| Migration to ESLint | Migrating from legacy i18n message IDs |
| Deprecation of IE 9, 10, and IE mobile. | Deprecating support for IE11. |
| Updates on Operation Blog. | Improved component tests harness. |
| Updated Language Service Preview. | HTTP improvements. |
| strict checks with a flag. | Default strict mode |
| Roadmap to provide early feedback | Roadmap to inform about the priorities of the Angular team |
| Updated Language Service Preview | Migration to default IVY-based language service |
| New Default Browser Configuration | Updated Language Service Preview |
| Improved Ngcc compiler | Improved logging and reporting |
No comments:
Post a Comment