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id: 8bff0ad4-3aea-49b0-bb30-503440a986f1
title: Events
slug: /node/reference/pubsub/client/events
description: Events available on the Client class.
max-toc-depth: 3
----------------

[pubsubmessage]: /docs/server-sdk/v4/node/reference/pubsub/pubsub-message

## Events

### onMessageReceived

* **client.pubSub.listen**(`{ onMessageReceived: Callback }`)

Emitted when a message is received on a channel. Your event handler will be called with an instance of [`PubSubMessage`][pubsubmessage].

#### Parameters

<ParamField path="message" type="PubSubMessage" required>
  The message that has been received. See [`PubSubMessage`][pubsubmessage].
</ParamField>