[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Browser](./puppeteer.protocol.browser.md) > [GetHistogramsRequest](./puppeteer.protocol.browser.gethistogramsrequest.md) > [query](./puppeteer.protocol.browser.gethistogramsrequest.query.md) ## Protocol.Browser.GetHistogramsRequest.query property Requested substring in name. Only histograms which have query as a substring in their name are extracted. An empty or absent query returns all histograms. Signature: ```typescript query?: string; ```