3. Using a messagebox

from browser import document, alert, window, html def save_data(event): try: destination = destination_input.value description = description_input.value address = address_input.value if not destination or not description or not address: raise ValueError("All fields must be filled") window.sessionStorage["Destination"] = destination window.sessionStorage["Description"] = description window.sessionStorage["Address"] = address except Exception as exception: alert(f'Error: {exception}') app = html.DIV() app <= html.LABEL('Destination: ') destination_input = html.INPUT() app <= destination_input app <= html.LABEL('Description: ') description_input = html.INPUT() app <= description_input app <= html.LABEL('Address: ') address_input = html.INPUT() app <= address_input button = html.BUTTON('Save') button.bind('click', save_data) app <= button document <= app

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