[Home](./index.md) > [puppeteer](./puppeteer.md) > [Puppeteer](./puppeteer.puppeteer.md) > [\_\_experimental\_registerCustomQueryHandler](./puppeteer.puppeteer.__experimental_registercustomqueryhandler.md) ## Puppeteer.\_\_experimental\_registerCustomQueryHandler() method Signature: ```typescript __experimental_registerCustomQueryHandler(name: string, queryHandler: QueryHandler): void; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | name | string | | | queryHandler | QueryHandler | | Returns: void