Popup
Popup is a component that is located on top of the Mini App. Its classic use case is a request for user confirmation to perform an action. Telegram Mini Apps allows specifying popup title, message and the list of up to 3 configurable buttons.
To show the popup, developer can utilize the web_app_open_popup Telegram Mini Apps method. When user presses any popup button, Telegram application emits the popup_closed event passing the identifier of the clicked button.