Angular 7

13 Nov 2018

A Complete Guide Of Angular 7 Its New Features And Updates

Every leading mobile app development company understands the worth of one of the most popular frameworks for web application development that is none other than Angular.

To make it much convenient and admiring for the developers to practice the development, a very new version Angular 7, has transformed the development world, with a full stack of innovative changes, significant updates, and new features, also it has given even more features to web developers like including the core framework, Angular Material, CLI with synchronized major versions, along with toolchain.

I know it must have spiked that technical creativity within you to understand that how new updates oozing from the Angular 7 would help you beat the boredom of its predecessor, thus we have brought this post especially for you to find more about Angular 7.

So without wasting any further moment let us take you on a journey full of technical advancements to be experienced through the Angular 7.

  • CLI Prompts

Angular CLI is updated and would let the developers when they are running the common commands such as ng new or ng add @angular/material. Also the common commands like ng-add or ng-new, @angular/material to help developers to discover built-in features like routing or SCSS support. Developers can also install the latest update of CLI globally by the command:

`npm install -g @angular/cli@latest`

On the completion, developers only need to type ng new and press enter and begin the development process.

  • Application Performance

The improvement made in the performance of the application has always been on the top list of Google, hence the Angular team identified the lows of the framework, and discovered that Angular developers were adding the reflect-metadata polyfill in production, only helping during the development process.

Thus an action was taken to remove this barrier, the Angular 7 came into the picture, which automatically remove it from your polyfills.ts file, and then add it as a build step when building an application in JIT mode, removing this polyfill from production builds.

To enhance the speed performance, every new application would warn when the initial app bundle goes more than 2MB and would give an error at 5MB, which further can be modified in the angular.json file. These budgets align with warnings that can be shown to users taking advantage of Chrome’s Data Saver features.

  • Angular Material & The CDK

The latest updates have definitely let the Angular Material and the Component Dev Kit (CDK), to experience the visual improvements in Material Design, like virtual scrolling, which allows the dynamically loading and unloading parts of the DOM to build high-performing and larger lists of data. It also has received the drag-and-drop capability.

  • Virtual Scrolling

Within the Angular CDK, the scrolling package <cdk-virtual-scroll-viewport> lets the helpers receive the direction to react to scroll events. It allows the developers to enable loading and unloading elements from the DOM based on the visible parts and simulate all items by making the height of the container element the same as the height of a total number of elements to be deployed. Developers can also develop the Angular Material’s StackBlitz to pick the virtual scrolling. The changes made within DOM elements can also be viewed during the scrolling.

  • Drag And Drop

Now developers get an easy and much declarative way to create drag-and-drop interfaces with @angular/cdk/ drag-drop, which offers the support for free dragging, sorting within a list, transferring items between lists, animations, touch devices, custom drag handles, previews, and placeholders effortlessly.

  • Angular Compatibility Compiler (ngcc)

This compiler is the step of transforming the node_modules compiled with the ngc to node_modules, which would be compatible with the new Ivy renderer. This Angular Compatibility compiler converts node_moduls compiled with ngc, into node_modules, which is further merged with ngtsc.

  • Angular Elements With Slot

The feature is a perfect choice for the Angular Elements which now supports content projection using web standards for the utilization of the custom elements. With the help of new standard HTML element ( a web component Specification-slot), developers can enable the components with a template.

  • New ng-compiler

The New ng-compiler holds the capacity of excellent 8-phase rotating ahead-of-time(AOT) compilation, which reduces the large app size approximately 2 times.

  • Splitting of @angular/core

In the past, developers got irked due to the multipurpose attribute of Angular, as this large framework by default offered the modules which are not required.

To solve this issue, this latest update has let the Angular to split @angular/core past the boundaries presenting no less than 418 modules.

  • Router

In this segment, Angular has brought a new warning, which lets the users trigger the navigation outside of the Angular zone. Also, Angular now logs a warning during the development mode and adds the navigation execution context info to activation hooks.

  • Documentation Updates

The Angular team has worked religiously to improve the guidelines and reference materials to help the developers. Now with this new update, the documentation has included the reference material for the Angular CLI.

  • Dependency Updates

Angular 7 has brought the update fro dependency on the third-party projects; Angular is up to Typescript 3.1, RxJS is up to 6.3 and Node 10 support has been added. However, for the latest update of TypeScript 3.1, it is compulsory to switch to TS 3.1 for Angular 7.

  • Ivy Renderer

Sadly it will take some more time for the next generation Ivy to be introduced to the world, and it is not a part of this Angular 7 update. As per the official blog post, it is stated that Ivy is still under active development.

What you must remember?

In this new version of Angular 7 few aspects have been deprecated, for instance using <ngForm> to declare a form in the template is now replaced by <ng-form>.

How to update Angular 7?

It is a very simple fact that suggests that if you are already running Angular App on Angular 6 & RXJS 6, you only need to update @ angular cli/core and also update the angular material.

 

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By:

Ankit Singh

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