WebSocket.extensions

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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 Status Comment
HTML Living Standard
WebSocket: extensions
Living Standard Initial definition

浏览器兼容性

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
extensionsChrome Full support YesEdge Full support 12Firefox Full support 8IE ? Opera Full support YesSafari ? WebView Android ? Chrome Android Full support YesEdge Mobile ? Firefox Android Full support 8Opera Android ? Safari iOS ? Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown

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