Concepts

One model, explained from a few angles — plus the how-it-works deep dives. Start with the first two if you've just finished Learn; reach for the rest when you need the detail.

The model

• Standard HTML Reactivity — why plain HTML is the baseline and reactivity layers on top.
• Progressive Complexity — start simple, add capability only when an interaction needs it.
• The lvt-* Decision Tree — choose plain HTML first and add lvt-* attributes only when required.

Writing apps

• Controller & State Pattern — how controllers and per-session state fit together.
• Error Handling — server errors, validation failures, form lifecycle, template error state, and flash messages.
• Transports & Progressive Enhancement — staying functional across full-live, HTTP-fetch, and raw form-POST from one controller and one template.

How it works

• The Update Flow — a single action, step by step: browser event → controller method → render → tree diff → DOM patch.
• Pubsub — Subscribe/Publish peer fan-out across a session's connections.
• Server push — server-initiated TriggerAction from goroutines, timers, and background jobs.