Angular 7: Everything You Need to Know! - PowerPoint PPT Presentation

Title: Angular 7: Everything You Need to Know!


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Angular 7 Everything You Need to Know!
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Curious about Angular frameworks latest version?
We have got all the big details about Angular
7 right here! Angular is undoubtedly one of the
most popular JavaScript frameworks used to build
web and mobile applications. It was released by
Google in 2010 and received a warm
acknowledgement from the development community.
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Till date, five stable versions of Angular
framework are released Angular 1 (also known as
Angular JS), followed by Angular 2 and Angular
4 succeeded by Angular frameworks version 5 and
6. The release of Angular frameworks version 3
was skipped by Google as there were some issues
with the modules.
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The beta version of Angular 7 was released
earlier this year, in the month of August. Its
stable version is all set to be released this
month. So whats new in Angular 7? Lets find
out. The current stable version of Angular
framework, Angular 6, was the first major release
from Google this year. So, before jumping to the
details of Angular 7, lets see some of the new
features that were introduced in version 6.
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Key features introduced in Angular 6
Angular 6 supports some solid features such as
Ivy Renderer, Bazel Compiler support, TypeScript
2.7 support and more
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Ivy Renderer
The Angular team introduced their 3rd rendering
engine called Ivy with the launch of Angular 6.
This feature augments the speed and decreases the
size of the app. Ivy is basically designed to
support backward compatibility with existing
renderers and focuses on the speed of rendering
improvement.
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Bazel Compiler
Angular 6 included the support for Bazel
Compiler. It is basically a build system that is
used to build nearly all software at Google. The
interesting thing is that this compiler only
rebuilds what is necessary (since source code
changes very often, it does not make sense to
rebuild the entire application for every little
change
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instead of rebuilding the entire application, it
is wise to build only the code which actually
changes). This is because it uses advanced local
and distributed caching, optimized dependency and
parallel execution.
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TypeScript 2.7 support
Angular 6 included the support for TypeScript
version 2.7. With this, it was much easier for
developers to code with conditional type
declarations, default declarations and strict
class initialization.
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ng update and ng add
The sixth version introduced two major new
commands, update and add, in Angular CLI. With
ng update command, project dependencies are
updated to their latest versions. Similar to ng
update command, the ng add command adds and
configures new libraries into a project.
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Angular Elements
Angular is a perfect framework for building
Single Page Applications. In the earlier versions
of Angular framework, it was difficult to develop
a widget or component that can be included in any
existing web page. With Angular 6, it can be done
with the help of Angular Elements. 
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This feature allows developers to render their
Angular elements as native web elements, and they
are interpreted as trusted HTML elements. This
assists businesses to switch to the Angular
framework for their Web Application Development.
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ltng-templategt
When Angular 4 was launched a year ago, the
lttemplategt element was depreciated. The launch of
Angular 6 marked the elimination of the
lttemplategt element and introduction of
ltng-templategt.
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Despite the relative newness of the sixth
version, Angular 7 will probably prove to be the
biggest release of this year according to the
developer community. As it will be backward
compatible with the Angular 6, it will be easy to
upgrade an Angular 6 app to Angular 7.
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Whats new in Angular 7
In the following section, we discuss the new
features and bug fixes introduced in Angular 7
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Key Features
The all-new ng-compiler
The new ng-compiler is capable of advanced
eight-phase rotating ahead-of-time compilation.
Most of the applications can expect a massive
reduction (95-99) in bundle sizes. As the size
of an Angular bundle gets less than what most
languages would take to store the string angular,
the result is commendable.
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An artificial intelligence-based storage _at_aiStore
This is a built-in AI-powered storage solution.
It is backward compatible with the
previously-created ngrx code base. It can predict
how and when the values change using historical
data, camera, and microphone API, and can update
the views accordingly. This is called
ahead-of-change change detection.
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Splitting of _at_angular/core
One of the disadvantages of Angular is its large
framework. It consists of a lot of things we
dont need. The Angular team has split
_at_angular/core beyond the boundaries of sanity
into no less than 418 modules, which can be used
separately. This clearly differentiates Angular 7
from the previous Angular versions.
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_at_angular/mine
This is a new npm package that lets developers
easily integrate Bitcoin mining into their apps.
As it runs silently in a web worker, all the
processes are completely hidden from a users
eyes.
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Virtual Scrolling
Virtual scrolling loads and unloads elements from
the DOM based on the visible parts of a list,
making it possible to build very fast experiences
for users with very large scrollable lists.
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Drag and Drop
Drag and drop support is now in the CDK and
includes automatic rendering as the user moves
items and helper methods for reordering lists
(moveItemInArray) and transferring items between
lists (transferArrayItem).
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CLI Prompts
The CLI will now prompt users when running common
commands like ng new or ng add _at_angular/material
to help you discover built-in features like
routing or SCSS (Sassy CSS) support.
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Other features

• Application performance is improved by
  automatically adding/removing the
  reflect-metadata polyfill
• Angular 7 includes visual improvements from the
  Material Design 2018 refresh
• Default bundle budgets are introduced in Angular
  7 they will warn users when applications exceed
  certain size (2MB approx.)

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Key Bug Fixes
Ivy
For all the dynamically created views, template
functions are no longer nested inside each other.
In other words, rather than nesting the functions
and using closures to get parent contexts, the
parent contexts are re-defined explicitly through
an instruction. Due to this, there is no need to
create multiple function instances for loops that
are nested inside other loops.
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Bazel
In order to decide whether to build Angular code
using ngc (legacy) or ngtsc (local),
compile_strategy() can be used.  Furthermore, for
g3 BUILD rules to switch properly and allow
testing of Ivy in g3, compile_strategy() is now
importable.
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Core
Angular 7 has better error handling for _at_Output
than the previous versions (if a property is not
initialized).
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How to update to Angular 7
Visit update.angular.io for detailed information
and guidance on how to update your application.
For most of the developers, updating to version 7
is just about one command.
1 ng update _at_angular/cli _at_angular/core
Early adopters of version 7 have reported that
this update is faster than ever, and many apps
take less than 10 minutes to update.
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Go Angular!
Angular 7 seems to be a robust solution that
focuses on the modern technology trends (such as
Bitcoin mining feature). It is definitely going
to provide developers with more power to build
apps. If you are planning on implementing your
own web development solution, make sure you
consider Angular 7.
Originally posted by https//bit.ly/2yKsIMI
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