Have JS Office Add-in close or exit events for the document?
问题 I'm currently develop a JS Office Add-in, but I could'n find any reference in API Documentation (https://dev.office.com/reference/add-ins/) for an close document or exit document event. I need to suscribe it to show the user warning message about save plugin settings 回答1: There are no events like that in the current version of the Add-in API. 回答2: Try this code: window.addEventListener("beforeunload", function (e) { var confirmationMessage = "\o/"; (e || window.event).returnValue =