Angular 18 : How to use signal input and output properties?
Angular introduced a new feature for signals called input and output properties. This feature aims to simplify component communication and improve performance.
Signal Input Properties:
Allow components to receive data as signals from parent components
Automatically create a writable signal in the child component
Update efficiently when the parent changes the input value
Signal Output Properties:
Enable components to emit signal values to parent components
Create a read-only signal in the parent component that updates when the child emits a new value
Benefits:
Simplified syntax: Reduces boilerplate code compared to traditional input/output bindings
Improved performance: Signal-based communication is more efficient than traditional change detection
Better reactivity: Changes propagate instantly through the component tree
Type safety: Provides stronger type checking between parent and child components
Easier debugging: Signals offer better traceability of data flow in applications
Consistency: Aligns with Angular's push for signal-based reactivity throughout the framework
This feature is part of Angular's ongoing effort to integrate signals more deeply into the framework, potentially leading to better performance and developer experience.
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