CloseEvent.reason

The reason read-only property of the CloseEvent interface returns the reason that the server closed the connection.

Value

A string.

Examples

The following example prints the value of reason to the console.

WebSocket.onclose = function(event) {
  console.log(event.reason);
};

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
reason
15
12
8
10
≤15
6
≤37
18
8
≤14
6
1.0

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https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent/reason