from nicegui import ui def main_demo() -> None: ui.jsoneditor(properties={'content': { 'json': { 'array': [1, 2, 3], 'boolean': True, 'color': '#82b92c', None: None, 'number': 123, 'object': {'a': 'b', 'c': 'd'}, 'time': 1575599819000, 'string': 'Hello World' }}}, on_select=lambda e: ui.notify(f'Select: {e}'), on_change=lambda e: ui.notify(f'Change: {e}')).classes('w-full')