# getDescription

Returns the description of the schema.

> If multiple descriptions are defined, the last one of the highest level is returned. If no description is defined, `undefined` is returned.

```ts
const description = v.getDescription<TSchema>(schema);
```

## Generics

- `TSchema` <Property {...properties.TSchema} />

## Parameters

- `schema` <Property {...properties.schema} />

## Returns

- `description` <Property {...properties.description} />

## Examples

The following examples show how `getDescription` can be used.

### Get description of schema

Get the description of a username schema.

```ts
const UsernameSchema = v.pipe(
  v.string(),
  v.regex(/^[a-z0-9_-]{4,16}$/iu),
  v.title('Username'),
  v.description(
    'A username must be between 4 and 16 characters long and can only contain letters, numbers, underscores and hyphens.'
  )
);

const description = v.getDescription(UsernameSchema);
```

### Overriding inherited descriptions

Get the description of a Gmail schema with an overridden description.

```ts
const EmailSchema = v.pipe(v.string(), v.email(), v.description('Email'));

const GmailSchema = v.pipe(
  EmailSchema,
  v.endsWith('@gmail.com'),
  v.description('Gmail')
);

const description = v.getDescription(GmailSchema); // 'Gmail'
```

## Related

The following APIs can be combined with `getDescription`.

### Actions

<ApiList items={['description']} />