WebSocket()构造函器会返回一个 WebSocket 对象。
语法
var aWebSocket = new WebSocket(url [, protocols]);
参数
url- 要连接的URL；这应该是WebSocket服务器将响应的URL。
protocols可选- 一个协议字符串或者一个包含协议字符串的数组。这些字符串用于指定子协议，这样单个服务器可以实现多个WebSocket子协议（例如，您可能希望一台服务器能够根据指定的协议（
protocol）处理不同类型的交互）。如果不指定协议字符串，则假定为空字符串。
抛出异常
SECURITY_ERR- 正在尝试连接的端口被阻止。
规范
| 规范 | 状态 | 注释 |
|---|---|---|
| HTML Living Standard the WebSocket constructor |
Living Standard |
浏览器兼容性
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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
WebSocket() constructor | Chrome Full support Yes | Edge Full support ≤79 | Firefox
Full support
7
| IE ? | Opera Full support Yes | Safari ? | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 7 | Opera Android ? | Safari iOS ? | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
- Compatibility unknown
- Compatibility unknown
- See implementation notes.
- See implementation notes.