window.opener does not work in Excel for Windows
问题 I have built an Excel add-in, it opens a popup by window.open , then the add-in communicates with the popup site. I just realised that it does NOT work in Excel for Windows, the reason is that the popup can NOT get the host by $window.opener . To illustrate this and avoid cross-domain, I have made a xml, which refers to the add-in and the test page. It works well in Excel Online in Chrome and in IE. However, while running it in Excel for Windows, $window.opener returns undefined . Could