[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Browser](./puppeteer.protocol.browser.md) > [GetHistogramRequest](./puppeteer.protocol.browser.gethistogramrequest.md) > [delta](./puppeteer.protocol.browser.gethistogramrequest.delta.md) ## Protocol.Browser.GetHistogramRequest.delta property If true, retrieve delta since last call. Signature: ```typescript delta?: boolean; ```