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One of the biggest new features in Angular v17 is deferrable views. This means that you can now tell Angular to wait to render a view until it’s actually needed. This can be a huge performance improvement, especially for views that are rarely seen.
For example, if you have a view that only shows up when the user clicks a button, you can defer it until the button is clicked. This will save Angular from having to render the view unnecessarily, which can improve the performance of your application.
Built-in Control Flow Loops
Another great new feature in Angular v17 is built-in control flow loops. This means that you can now use
while loops in your Angular templates. This can make your templates more concise and easier to read.
For example, the following code snippet shows how to use a
for loop to iterate over an array of cats:
<ng-container *ngFor="let cat of cats">
This code will loop over the
cats array and print out the name of each cat.
Up to 90% Faster Runtime
Angular v17 is also up to 90% faster than previous versions. This means that your applications will run faster than ever before.
The performance improvements in Angular v17 are due to a number of factors, including the new deferrable views feature and the built-in control flow loops.
Up to 87% Faster Builds
In addition to being faster at runtime, Angular v17 is also up to 87% faster to build. This means that you can get your applications up and running faster than ever before.
The build performance improvements in Angular v17 are due to a number of factors, including the new Ivy compiler and the improved TypeScript support.
New MDC-based Angular Material Components
Angular v17 also includes new MDC-based Angular Material components. These components are based on the Material Design Components (MDC) library, which is a collection of high-quality components that are designed to be beautiful, accessible, and performant.
The new MDC-based Angular Material components are a major improvement over the legacy components. They are more consistent with the Material Design specification, and they are also more performant. You can find the migration guide here.
Deprecated Legacy Components
The legacy Angular Material components have been deprecated in Angular v17. This means that they will be removed in a future version of Angular.
If you are still using the legacy Angular Material components, you should update your applications to use the new MDC-based components as soon as possible.
Angular v17 is a major release that brings a number of significant improvements to the framework. If you are a developer who uses Angular, you should definitely upgrade to v17 as soon as possible.
P.S. Don’t forget to check out the new Angular website at angular.dev!