The wasClean read-only property of the CloseEvent interface returns true if the connection closed cleanly.
CloseEvent.wasClean
Value
A boolean value. True if the connection closed cleanly, false otherwise.
Examples
The following example prints the value of wasClean to the console.
WebSocket.onclose = function(event) { console.log(event.wasClean); };
Specifications
| Specification |
|---|
| WebSockets Standard # ref-for-dom-closeevent-wasclean② |
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 | |
wasClean |
13
|
12
|
8
|
10
|
≤15
|
6
|
4.4
|
18
|
8
|
≤14
|
6
|
1.0
|
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https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent/wasClean
