[Home](./index.md) > [puppeteer](./puppeteer.md) > [Puppeteer](./puppeteer.puppeteer.md) > [\_\_experimental\_customQueryHandlerNames](./puppeteer.puppeteer.__experimental_customqueryhandlernames.md) ## Puppeteer.\_\_experimental\_customQueryHandlerNames() method Signature: ```typescript __experimental_customQueryHandlerNames(): string[]; ``` Returns: string\[\] a list with the names of all registered custom query handlers.