What is Angular 7?

Angular 7 is a JavaScript (actually a TypeScript based open-source full-stack web application) framework which makes you able to create reactive Single Page Applications (SPAs). Angular 7 is completely based on components. It consists of several components which forms a tree structure with parent and child components. Angular's versions beyond 2+ are generally known as Angular only. The very first version Angular 1.0 is known as AngularJS. "Angular is a complete rewrite of AngularJS by the same team that built AngularJS."

Difference between Angularjs and angular7

No	AngularJS	Angular
1	AngularJS is common and popular name of the first version of Angular1.0.	Angular is common and popular name of the Angular's version beyond 2+
2	AngularJS is a JavaScript-based open-source front-end web framework.	Angular is a TypeScript-based open-source full-stack web application framework.
3	AngularJS uses the concept of scope or controller.	Instead of scope and controller, Angular uses hierarchy of components as its primary architectural characteristic.
4	AngularJS has a simple syntax and used on HTML pages along with the source location.	Angular uses the different expression syntax. It uses "[ ]" for property binding, and "( )" for event binding.
5	AngularJS doesn't support dynamic loading of the page.	Angular supports dynamic loading of the page

New features in angular 7

The angular7 is better than angularjs with those features

1. CLI prompts

• In Angular 7, the CLI prompts have been updated to v7.0.2 with new features. For instance, it will now prompt users when typing commands like @angular/material, ng-new, and ng-add to help them discover the in-built SCSS support, routing, and more. These CLI prompts, in addition, have been added to Schematics, so that all package publishing schematics can now benefit from CLI prompts.

2. Angular material & component dev kit (CDK)

• The Angular 7 introduced minor visual updates & improvements in Material Design that earlier received a major update this year only.

• In addition, refresh, virtual scrolling, large lists of data, dynamic loading and unloading of parts of the DOM also were the part of improvements in CDK and Angular Material.

• Furthermore, the applications in Angular 7 can now also be fitted with drag-and-drop functionality by either importing ScrollingModule or DragDropModule.

3. Drag & drop

• The new drag-drop module basically provides a better way to easily create drag & drop interfaces, which is backed by sorting within a list, support for free dragging, animations, custom drag handles, transferring items between lists, previews, and placeholder

• In simple terms, the Drag-and-Drop support has now been implemented in CDK and it also includes automatic rendering as the users relocates items.

4. Virtual scrolling

• Like mentioned earlier, the new Virtual Scrolling in Angular 7 basically loads and unloads items from the DOM depending upon visible parts of lists, resulting into a much faster experiences for users having huge scrollable lists.

• This virtual scrolling package basically provides helpers, which react to all scroll events.

• Simply put, it activates a high-performant way by making the height of container element exactly same as the height of total number of remaining elements to be rendered.

• This, in turn, then renders the only visible items in view, creating faster experiences for the end-users.

5. Application performance improvements

• The development team at Google have always focused on the performance improvements, and while doing so, they recently found that most of the developers were using reflect-metadata in their production, which actually was only required in the development. So, to fix this problem, they’ve made a part of Angular JS 7 to automatically remove this from the polyfills.ts file.

6. No Ivy

• No Ivy rendered in the Angular 7 according to the official information. The AngularJS development company’s team have said that the Ivy is in the pipeline; however, they haven’t disclosed its final timeline.

• The official blog post also mentioned that the backward compatibility validation has begun. And its full beta version is expected to launch with Angular 8 version.

7. Documentation updates

• The team has worked hard on improving the reference material and the guidelines for the betterment and convenience of the developers.

• The documentation updates for Angular is an important step for the Angular CLI.

8. Dependency updates

• Documentation are not the only things that have been updated. Even the dependencies have undergone upgradation for the third-party projects.

• The support for Node 10, TypeScript3.1, and the RxJS6.3 all are included under this update.

• However, you would continue to receive the support if you already have Node 8. Talking about the latest update of TypeScript 3.1, it has now become compulsory for Angular 7 users to bump to TS 3.1.

Upgrading requirements

• The Upgrading process is really simple. For most Angular apps out there that are running on Angular 6 and RxJS 6, you only need to run a single command stated below to upgrade to Angular 7.

$ ng update @angular/cli @angular/core

• If, however, you’re using Angular Material, use following single line command and you’re good to go!

$ ng update @angular/material

• During the upgrade process, if anything seems unusual, check out the update guide to see if you need to execute any special commands.

Conclusion

• All in all, the Angular 7 seems like a far better solution. The Angular development team has certainly did a great job in making the Angular platform better.

• Therefore, if you’re planning to implement Angular in your own project, whether mobile or web, we recommend to hire AngularJS developer who is well-versed with the framework.

• It’s an up-to-date, modern, and efficient framework to build next generation products.