[Home](./index.md) > [server](./server.md) > [EventRouter](./server.eventrouter.md) > [on](./server.eventrouter.on_1.md) ## EventRouter.on() method **Signature:** ```typescript on(eventType: string, listener: (payload: any) => void): void; ``` ## Parameters

Parameter	Type	Description
eventType	string
listener	(payload: any) => void

**Returns:** void