WebSocket.readyState

Summary

The WebSocket.readyState read-only property returns the current state of the WebSocket connection.

Syntax

var readyState = aWebSocket.readyState;

Value

One of the following unsigned short values:

0 (CONNECTING)
The connection is not yet open.
1 (OPEN)
The connection is open and ready to communicate.
2 (CLOSING)
The connection is in the process of closing.
3 (CLOSED)
The connection is closed or couldn't be opened.

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'WebSocket.readyState' in that specification.
Living Standard Initial definition

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support Yes ? Yes ? Yes ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support ? Yes ? Yes ? ? ?

Document Tags and Contributors

Contributors to this page: fscholz, Claas
Last updated by: fscholz,