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Reusable Child Component with @Input/@Output (Two-way Binding)

By FrontendAtlas Team · Updated Jan 30, 2026

Expose a value input and a valueChange output to support two-way binding, and keep the child component stateless so the parent owns the source of truth. Concepts: components, inputs outputs, binding, event binding, template syntax.

  • Create a reusable child component (standalone) that receives value via @Input.
  • Child must emit changes via @Output so the parent can react.

Challenge preview

Reusable Child Component with @Input/@Output (Two-way Binding): Expose a value input and a valueChange output to support two-way binding, and keep the child component stateless so the parent owns the source…. Expect components and inputs-outputs decisions under intermediate level constraints.

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