WebSocket.url
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.
The WebSocket.url read-only property returns the absolute URL of the WebSocket as resolved by the constructor.
**WebSocket.url**是一个只读属性，返回值为当构造函数创建WebSocket实例对象时 URL 的绝对路径。
语法
var url = aWebSocket.url;
返回值
A DOMString.
规范
| Specification |
|---|
| WebSockets # ref-for-dom-websocket-url① |