Discover Angular 18's advanced features for enhanced web development
Signal-Based Change Detection without Zones
Dynamic Route Redirection via Functions
Developer Preview: Signal APIs
Advancements and Stability in Angular 18
Default Content Provision for ng-content
Tracking Form Control Events
Event Replaying in Preview Stage
Signal-Based Change Detection without Zones
An innovative feature now exists for testing that facilitates signal-based change detection without zone dependencies. This technique seeks to enhance performance by minimizing the overhead typically associated with conventional change detection processes.
Dynamic Route Redirection via Functions
Angular 18 introduces a feature that enables route redirection to be dynamically determined by runtime conditions. The redirectTo attribute can now take a function that produces a URL string, thereby providing greater control over redirection logic.
Developer Preview: Signal APIs
Signals offer a dependable framework for state and data flow management, bolstering the reactivity and efficiency of applications. First seen in versions 17.1 and 17.2, Signals equip Angular components with an efficient means to respond to data alterations, maintaining the sync between the user interface and the application's state.
Advancements and Stability in Angular 18
Angular 18 offers numerous enhancements, building on the groundwork laid by the previous Angular 17 release. Noteworthy features that have achieved stability in this current version are: - Signals: A new reactive primitive. - Deferrable views: An option to delay view updates. - Built-in control flows: Improved ways to control how templates render content.
Default Content Provision for ng-content
Angular 18 facilitates the inclusion of fallback content for the ng-content tag. This allows for a default presentation to be displayed in scenarios where no specific content is projected into a component.
Tracking Form Control Events
Angular now includes a new events property on form controls, which allows for subscribing to a flow of events pertaining to form controls. These events provide insight into form state alterations, including changes in value, touch status, pristine state, and overall control status.
Event Replaying in Preview Stage
In a recent update, one of Google’s core libraries, event dispatch (formerly jsaction), has been integrated into Angular’s monorepo starting with version 18. Event dispatch enhances user experience by powering event replay during hybrid rendering. You can enable this feature using the withEventReplay() method.