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Angular 4: What are the big new features?

Posted on 2017-09-21
Medium Priority
Last Modified: 2017-09-22
And what is Semantic Versioning?

Question by:newbieweb
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by:Pawan Kumar
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ID: 42304127
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by:Julian Hansen
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ID: 42304253
Here are the Angular docs on this http://angularjs.blogspot.co.za/2016/10/versioning-and-releasing-angular.html

Which draws from here http://semver.org/

From the first doc
SemVer means that our version numbers are meaningful. Patch releases will not change the functionality, minor releases will contain only additive changes, and breaking changes are reserved for major releases.
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by:Julian Hansen
Julian Hansen earned 1000 total points
ID: 42304256
to address your actual question
Angular 4: What are the big new features?
New relative to .. version 2 / version 1.6 / 1.5
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Author Comment

ID: 42304325
How about from 2.

What version numbers do they mean?
> SemVer means that our version numbers are meaningful.
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Accepted Solution

Julian Hansen earned 1000 total points
ID: 42304820
Version 4.x.y - the numbers all means something specific.

In terms of differences - not much between the two - no breaking changes. The Angular 4 core changed a bit under the hood to make things a bit faster and smaller.
a faster renderer
compiles to a smaller footprint
compiles faster
better bug reporting
ng-if now has an else part.
Support for typescript 2.1 and 2.2
Animation removed from core

So more of a delivery / debug / restructure than a feature update.

Basically if you know Angular 2 you know Angular 4

Author Closing Comment

ID: 42305503
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Expert Comment

by:Julian Hansen
ID: 42305618
you are welcome.

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