Enum Button

Button

An enum representing predetermined, localized dialog buttons returned by an alert or PromptResponse.getSelectedButton() to indicate which button in a dialog the user clicked. These values cannot be set; to add buttons to an alert or prompt, use ButtonSet instead.

To call an enum, you call its parent class, name, and property. For example, Base.Button.CLOSE. 

// Display a dialog box with a message and "Yes" and "No" buttons.
const ui = DocumentApp.getUi();
const response = ui.alert(
    'Are you sure you want to continue?',
    ui.ButtonSet.YES_NO,
);

// Process the user's response.
if (response === ui.Button.YES) {
  Logger.log('The user clicked "Yes."');
} else {
  Logger.log('The user clicked "No" or the dialog\'s close button.');
}

Properties

PropertyTypeDescription
CLOSEEnumThe standard close button displayed in every dialog's title bar. This button is not explicitly added to a dialog, and it cannot be removed.
OKEnumAn "OK" button, indicating that an operation should proceed.
CANCELEnumA "Cancel" button, indicating that an operation should not proceed.
YESEnumA "Yes" button, indicating a positive response to a question.
NOEnumA "No" button, indicating a negative response to a question.