[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Input](./puppeteer.protocol.input.md) > [DispatchMouseEventRequest](./puppeteer.protocol.input.dispatchmouseeventrequest.md) > [button](./puppeteer.protocol.input.dispatchmouseeventrequest.button.md) ## Protocol.Input.DispatchMouseEventRequest.button property Mouse button (default: "none"). Signature: ```typescript button?: MouseButton; ```