---
title: "Register a Client"
url: https://docs.catalyst.zoho.com/en/sdk/web/v4/cloud-scale/push-notifications/register-client/
description: "This Web SDK script allows you to register a client device to receive push notifications from your Catalyst web application."
last_updated: 2026-09-08T11:07:33Z
service: Cloud Scale
type: general
related_links:
  - name: "Push Notifications"
    url: /en/cloud-scale/help/push-notifications/introduction
  - name: "Push Notification - API"
    url: /en/api/code-reference/cloud-scale/push-notifications/web/send-web-push-notifications/#SendWebPushNotifications
---

# Register a Client for Receiving Web Push Notifications

> **Note:** This SDK is currently in deprecation. Migrate to [JavaScript SDK](https://docs.catalyst.zoho.com/en/sdk/javascript/v1/overview/) now.

The `enableNotification()` method registers a client for receiving [push notifications](https://docs.catalyst.zoho.com/en/cloud-scale/help/push-notifications/introduction/) from your web application. The `notification` reference used in the code snippet below is the [component instance](https://docs.catalyst.zoho.com/en/sdk/web/v4/cloud-scale/push-notifications/get-component-instance) created earlier.

The `enableNotification()` method returns a promise which is resolved to an object. After resolving the promise, you can handle the notification message through the `messagehandler`.

```javascript
//Register the client
var notification = catalyst.notification;
notification.enableNotification().then((response) => {
//Create a handler for the message when received
catalyst.notification.messageHandler = (msg) => {
//Action to be performed when the message is generated
}
});

```

You can then send push notifications to the registered client either from the [Catalyst console](https://docs.catalyst.zoho.com/en/cloud-scale/help/push-notifications/web), or through [this API](https://docs.catalyst.zoho.com/en/api/code-reference/cloud-scale/push-notifications/web/send-web-push-notifications/#SendWebPushNotifications).