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Angular Responsive Service

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Aackuser
Last edited Aug 9, 2017
Created on Apr 18, 2019

This example demonstrates an Angular service that detects the current screen size and notifies subscribed components when the browser window is resized. It uses the `window.matchMedia` API with Bootstrap-style breakpoints (xs, s, m, l, xl) to expose boolean checks like `isXS()` and `isSmallScreen()`, and it stores callback functions in an array that are invoked on every resize event. The service also registers change callbacks via `registerChangeCallback` to enable reactive updates in the application.

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