close

close events are generated by several APIs:

HTML DOM

Sent to a target <dialog> to let it know that it has been closed.

IndexedDB API

Sent to the IDBDatabase object representing a database connection when the database is unexpectedly closed. This happens after all transactions have been aborted. You can use IDBDatabase.onclose to establish the event handler.

WebRTC API

Sent to an RTCDataChannel to let it know that a data connection has been terminated. You can use the RTCDataConnection.onclose property to establish an event handler for this, in addition to using addEventListener().

WebSocket API

Sent when a WebSocket connection closes. More information needed here.

Web Workers API

Some browsers used a close event to indicate that a given Worker had shut down; this was at one point part of the specification, but has been removed from the spec, and browsers are in the process of removing support for this event in the Web Workers API.

General info

Specification

WHATWG HTML Living Standard
The definition of 'close' in that specification.
Indexed Database API
The definition of 'close' in that specification.
WebRTC 1.0: Real-time Communication Between Browser
The definition of 'close' in that specification.

Interface

Event

Bubbles

No

Cancelable

No

Target

HTMLDialogElement, IDBDatabase, RTCDataChannel, or WebSocket

Default Action

None

Properties

Being an Event, this event implements only the properties of this interface.

Methods

Being an Event, this event implements only the methods of this interface.

Related Events

• open
• message
• cancel

Specifications

Browser compatibility