Local state and directives

Choose Alpine-sized problems

Recognize interactions that need local browser state without a full component framework.

9 minute lesson

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Before choosing a tool or writing more code, make the requirement concrete. The issue filter, disclosure, and edit form are local interactions around server-rendered content.

Alpine works best when HTML remains the center and JavaScript adds behavior close to the element that owns it. The useful target is not encyclopedic coverage. Make one deliberate choice, observe its consequences, and know which requirement would make you revise it.

A common failure is to move routing, server authority, and a large shared data model into inline expressions. The happy path may still work, which makes the mistake easy to miss. write the no-JavaScript behavior first and give Alpine only the state needed for the local interaction. Keep the first version small enough that every important input and output remains visible.

This supports the module goal: Add a small local behavior to useful HTML without turning the whole page into a client application. Capture the request, command, trace, screenshot, test result, or other evidence that proves the result.

List the board interactions and classify each as server-owned, URL-owned, page-local, or component-local. Change one condition on purpose, predict the result, and compare the prediction with what actually happened.

Lesson completed

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