svelte-ui-integration

Progressive enhancement in SvelteKit means building forms that work without JavaScript, then layering client-side interactivity on top. Use form actions in +page.server.ts for server-side submission handling, standard HTML form elements for baseline functionality, and optional Svelte event listeners to enhance the experience without breaking core workflows.

Define form actions in +page.server.ts using named or default export functions that receive FormData. SvelteKit automatically routes form submissions to these handlers, validates inputs, and returns results to the client. Bind forms to actions using method="POST" and action attributes, ensuring both server-side logic and progressive enhancement out of the box.

Yes. Load functions in +page.server.ts and +layout.server.ts fetch data server-side before rendering, passing typed data to components via props. This pattern enables progressive enhancement by decoupling data fetching from client-side JavaScript, ensuring content is available immediately and reducing layout shift.

Accessibility in SvelteKit requires semantic HTML (form, fieldset, label elements), proper ARIA attributes, keyboard event handlers (onkeydown, onkeyup), and focus management. SvelteKit's file-based routing and standard form patterns provide a foundation; test with assistive technology and keyboard-only navigation to verify full compliance.

Yes. The SvelteKit UI integration skill mandates tests for load functions, form actions, and component behavior. Use Vitest or similar frameworks to test server-side logic, form submissions, and progressive enhancement paths. Tests ensure regressions don't break keyboard navigation or server-side fallbacks.

Load functions retrieve and render initial data server-side, ideal for page loads and data display. Form actions handle user submissions and state changes, executed on POST requests. Together they enable full-stack workflows: load functions pre-populate forms, form actions process submissions, both support progressive enhancement without requiring client-side JavaScript frameworks.