Angular / Intermediate

Angular โ€” Intermediate

Coordinate dependency scope, routing, HTTP, streams, lifecycle, and isolated interaction tests.

6 lessons ยท No account required

What you will learn

  • Explain the levelโ€™s data, lifecycle, and verification contracts.
  • Solve worked exercises and distinguish local evidence from complete application behavior.

  1. Dependency injection and service scope

    Choose where a dependency is provided, understand the lifetime of the resulting instance, and call inject only within a supported runtime context.

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  2. Router navigation and route data

    Treat the URL as application state, configure ordered routes and outlets, and validate route data without treating a client guard as server authorization.

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  3. HTTP and runtime validation

    Separate HTTP transport from domain decoding, model request outcomes explicitly, and test with synthetic responses instead of contacting real services.

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  4. RxJS and signal interoperability

    Choose between value state and event streams, make cancellation and error placement explicit, and create signal subscriptions at a managed ownership boundary.

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  5. Lifecycle and resource cleanup

    Place initialization and teardown at their actual ownership boundaries, avoiding state changes during rendering and work that survives a destroyed view.

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  6. Component testing and accessibility

    Verify observable behavior through a host, distinguish template syntax from execution, and include keyboard, naming, and focus in the feature contract.

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