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
A DOMString
.
规范
Specification |
---|
WebSockets Standard # ref-for-dom-websocket-extensions① |
浏览器兼容性
BCD tables only load in the browser