puppeteer/docs/api/puppeteer.customqueryhandler.md

---
sidebar_label: CustomQueryHandler
---

# CustomQueryHandler interface

#### Signature:

```typescript
export interface CustomQueryHandler
```

## Properties

| Property | Modifiers             | Type                                                      | Description                                                                                                                                                                                   | Default |
| -------- | --------------------- | --------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------- |
| queryAll | <code>optional</code> | (node: Node, selector: string) =&gt; Iterable&lt;Node&gt; | Searches for some [Nodes](https://developer.mozilla.org/en-US/docs/Web/API/Node) matching the given <code>selector</code> from [node](https://developer.mozilla.org/en-US/docs/Web/API/Node). |         |
| queryOne | <code>optional</code> | (node: Node, selector: string) =&gt; Node \| null         | Searches for a [Node](https://developer.mozilla.org/en-US/docs/Web/API/Node) matching the given <code>selector</code> from [node](https://developer.mozilla.org/en-US/docs/Web/API/Node).     |         |
chore: format docs (#8629) 2022-07-05 13:41:43 +00:00			`---`
			`sidebar_label: CustomQueryHandler`
			`---`

			`# CustomQueryHandler interface`

fix: update documentation on configuring puppeteer (#9150) This PR updates the docs regarding configuring puppeteer. In addition, some changes have been made to the documentation generator to show default values on the documentation site. Also fixes: https://github.com/puppeteer/puppeteer/pull/9144 2022-10-24 07:07:05 +00:00			`#### Signature:`
chore: format docs (#8629) 2022-07-05 13:41:43 +00:00
			```typescript
			`export interface CustomQueryHandler`
			```

			`## Properties`

docs: remove some redundant instances of @returns (#9943) 2023-03-30 11:54:00 +00:00			`\| Property \| Modifiers \| Type \| Description \| Default \|`
			`\| -------- \| --------------------- \| --------------------------------------------------------- \| --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- \| ------- \|`
			`\| queryAll \| <code>optional</code> \| (node: Node, selector: string) => Iterable<Node> \| Searches for some [Nodes](https://developer.mozilla.org/en-US/docs/Web/API/Node) matching the given <code>selector</code> from [node](https://developer.mozilla.org/en-US/docs/Web/API/Node). \| \|`
			`\| queryOne \| <code>optional</code> \| (node: Node, selector: string) => Node \\| null \| Searches for a [Node](https://developer.mozilla.org/en-US/docs/Web/API/Node) matching the given <code>selector</code> from [node](https://developer.mozilla.org/en-US/docs/Web/API/Node). \| \|`