WebSocket.extensions

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.

**WebSocket.extensions**是只读属性,返回服务器已选择的扩展值。目前,链接可以协定的扩展值只有空字符串或者一个扩展列表。

The WebSocket.extensions read-only property returns the extensions selected by the server. This is currently only the empty string or a list of extensions as negotiated by the connection.

语法

var extensions = aWebSocket.extensions;

返回值

规范

Specification
WebSockets
# ref-for-dom-websocket-extensions①

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
extensions

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support