22 lines
1.2 KiB
Markdown
22 lines
1.2 KiB
Markdown
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<!-- Do not edit this file. It is automatically generated by API Documenter. -->
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[Home](./index.md) > [puppeteer](./puppeteer.md) > [CustomQueryHandler](./puppeteer.customqueryhandler.md)
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## CustomQueryHandler interface
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Contains two functions `queryOne` and `queryAll` that can be [registered](./puppeteer.puppeteer.registercustomqueryhandler.md) as alternative querying strategies. The functions `queryOne` and `queryAll` are executed in the page context. `queryOne` should take an `Element` and a selector string as argument and return a single `Element` or `null` if no element is found. `queryAll` takes the same arguments but should instead return a `NodeListOf<Element>` or `Array<Element>` with all the elements that match the given query selector.
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<b>Signature:</b>
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```typescript
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export interface CustomQueryHandler
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```
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## Properties
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| Property | Type | Description |
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| --- | --- | --- |
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| [queryAll?](./puppeteer.customqueryhandler.queryall.md) | (element: Element \| Document, selector: string) => Element\[\] \| NodeListOf<Element> | <i>(Optional)</i> |
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| [queryOne?](./puppeteer.customqueryhandler.queryone.md) | (element: Element \| Document, selector: string) => Element \| null | <i>(Optional)</i> |
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