WebSocket: readyState property
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Note: This feature is available in Web Workers.
The WebSocket.readyState read-only property returns the
current state of the WebSocket connection.
Value
A number which is one of the four possible state constants defined on the WebSocket interface:
WebSocket.CONNECTING(0)-
Socket has been created. The connection is not yet open.
WebSocket.OPEN(1)-
The connection is open and ready to communicate.
WebSocket.CLOSING(2)-
The connection is in the process of closing.
WebSocket.CLOSED(3)-
The connection is closed or couldn't be opened.
Specifications
| Specification |
|---|
| WebSockets # ref-for-dom-websocket-readystate① |