An add-in's settings (Office.Settings; Settings requirement set): each instance of the add-in has its own, saved in the document. A value is anything JSON can hold.
Office.Settings
Settings
A setting's value; null or undefined when it is not set.
null
undefined
Set a setting, until the add-in closes; saveAsync keeps it.
saveAsync
Save the settings in the document, to be saved with it.
An add-in's settings (
Office.Settings;Settingsrequirement set): each instance of the add-in has its own, saved in the document. A value is anything JSON can hold.