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WebSocket.close() 方法关闭 WebSocket 连接或连接尝试（如果有的话）。 如果连接已经关闭,则此方法不执行任何操作。
Syntax
WebSocket.close();
Parameters
code可选- A numeric value indicating the status code explaining why the connection is being closed. If this parameter is not specified, a default value of 1005 is assumed. See the list of status codes of
CloseEventfor permitted values. reason可选- A human-readable string explaining why the connection is closing. This string must be no longer than 123 bytes of UTF-8 text (not characters).
Exceptions thrown
INVALID_ACCESS_ERR- An invalid
codewas specified. SYNTAX_ERR- The
reasonstring is too long or contains unpaired surrogates.
Note: In Gecko, this method didn't support any parameters prior to Gecko 8.0 (Firefox 8.0 / Thunderbird 8.0 / SeaMonkey 2.5).
Specifications
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'WebSocket.close()' in that specification. |
Living Standard | Initial definition |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Chrome Full support Yes | Edge ? | Firefox
Full support
8
| IE ? | Opera Full support Yes | Safari ? | WebView Android ? | Chrome Android Full support Yes | Edge Mobile ? | Firefox Android Full support Yes | Opera Android ? | Safari iOS ? | Samsung Internet Android ? |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown
- See implementation notes.
- See implementation notes.