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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.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | Yes | ? | 8 4 — 81 | ? | Yes | ? |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | ? | Yes | ? | Yes | ? | ? | ? |
1. Parameters not supported, see bug 674716.