# Create your form

Formisch consists of runes, components and methods. To create a form you use the <Link href="/svelte/api/createForm/">`createForm`</Link> rune.

## Form rune

The <Link href="/svelte/api/createForm/">`createForm`</Link> rune initializes and returns the store of your form. The store contains the state of the form and can be used with other Formisch runes, components and methods to build your form.

```svelte
<script lang="ts">
  import { createForm, Field, Form } from '@formisch/svelte';
  import * as v from 'valibot';

  const LoginSchema = v.object({
    email: v.pipe(v.string(), v.email()),
    password: v.pipe(v.string(), v.minLength(8)),
  });

  const loginForm = createForm({
    schema: LoginSchema,
  });
</script>

<Form of={loginForm}>
  <!-- Form fields will go here -->
</Form>
```

### Configuration options

The <Link href="/svelte/api/createForm/">`createForm`</Link> rune accepts a configuration object with the following options:

- `schema`: Your Valibot schema that defines the form
- `initialInput`: Initial values for your form fields (optional)
- `validate`: When validation first occurs (optional, defaults to `'submit'`)
- `revalidate`: When revalidation occurs after initial validation (optional, defaults to `'input'`)

```ts
const loginForm = createForm({
  schema: LoginSchema,
  initialInput: {
    email: 'user@example.com',
  },
  validate: 'initial',
  revalidate: 'input',
});
```

Formisch tracks two inputs for every field: the **initial input** (baseline for dirty tracking) and the **current input** (what the user is editing). In many apps, the initial input represents the server state while the current input represents the client state.

`isDirty` becomes `true` when a field's current input differs from its initial input. Use <Link href="/methods/api/setInput/">`setInput`</Link> to update the current input (client state), and use <Link href="/methods/api/reset/">`reset`</Link> to update the initial input (baseline) when your server data changes or is refreshed.

### Multiple forms

When a page contains multiple forms, you can create separate form stores for each one:

```svelte
<script lang="ts">
  import { createForm, Form } from '@formisch/svelte';
  import * as v from 'valibot';

  const LoginSchema = v.object({
    email: v.pipe(v.string(), v.email()),
    password: v.pipe(v.string(), v.minLength(8)),
  });

  const RegisterSchema = v.object({
    username: v.pipe(v.string(), v.minLength(3)),
    email: v.pipe(v.string(), v.email()),
    password: v.pipe(v.string(), v.minLength(8)),
  });

  const loginForm = createForm({ schema: LoginSchema });
  const registerForm = createForm({ schema: RegisterSchema });
</script>

<Form of={loginForm}><!-- … --></Form>
<Form of={registerForm}><!-- … --></Form>
```

## Next steps

Now that you know how to create a form, continue to the <Link href="/svelte/guides/add-form-fields/">add form fields</Link> guide to learn how to connect your input elements to the form using the <Link href="/svelte/api/Field/">`Field`</Link> component.