Function set_via_ws

tests/websocket/test_ws_props.py:216–226

(n)

    @app.callback(Output("result", "children"), Input("btn", "n_clicks"))
    async def set_via_ws(n):
        if not n:
            raise PreventUpdate

        from dash import ctx

        ws = ctx.websocket
        if ws:
            await ws.set_prop("target", "children", f"Set via WebSocket {n}")
            return "Set complete"
        return "No WebSocket"

    dash_duo.start_server(app)