PushSubscription: subscriptionId property
Deprecated
Avoid using this feature in new projects. This feature may be a candidate for removal from web standards or browsers.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is available in Web Workers.
The subscriptionId read-only property of the
PushSubscription interface returns a string containing
the subscription ID associated with the push subscription.
Warning:
Instead of this feature, use the PushSubscription.endpoint property on the same interface.
Value
A string.
Specifications
This feature was removed from the Push API specification. It is no longer on track to become a standard.