Sep 12, 2024 · Aug 22, 2024 · Aug 23, 2024 · Aug 23, 2024 · Aug 28, 2024 · Aug 28, 2024
diff --git a/files/en-us/web/api/websockets_api/using_websocketstream/index.md b/files/en-us/web/api/websockets_api/using_websocketstream/index.md
 Next, we create an `if ... else` structure to feature detect `WebSocketStream` and output an informative message on non-supporting browsers:

 ```js
 if ("WebSocketStream" inwindow) {
 if ("WebSocketStream" inself) {
  // supporting code path
 } else {
  writeToScreen("Your browser does not support WebSocketStream");
Original file line number	Diff line number	Diff line change
Expand Up		@@ -132,7 +132,7 @@ function writeToScreen(message) {
		Next, we create an `if ... else` structure to feature detect `WebSocketStream` and output an informative message on non-supporting browsers:

		```js
		if ("WebSocketStream" inwindow) {
		if ("WebSocketStream" inself) {
		// supporting code path
		} else {
		writeToScreen("Your browser does not support WebSocketStream");
Expand Down