[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Input](./puppeteer.protocol.input.md) > [EmulateTouchFromMouseEventRequest](./puppeteer.protocol.input.emulatetouchfrommouseeventrequest.md) > [button](./puppeteer.protocol.input.emulatetouchfrommouseeventrequest.button.md) ## Protocol.Input.EmulateTouchFromMouseEventRequest.button property Mouse button. Only "none", "left", "right" are supported. Signature: ```typescript button: MouseButton; ```