Enhanced Forms in Svelte

From the SvelteKit cheat sheet · Form Actions · verified Jul 2026

Client-side progressive enhancement

javascript

<script>
  import { enhance } from '$app/forms';
</script>

<form use:enhance>
  <input name="title" />
  <button>Submit</button>
</form>

⚡ use:enhance for progressive enhancement

🎯 Optimistic UI updates without waiting

📝 Access to form data before submission

🔄 Custom result handling and validation

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