从IFRAME分配主窗口中的字段值

Question

In an IFRAME there's a value declared by var blipp = 7; . In the main window, I there's a field called new_blopp . I'd be delighted to get blipp into blopp . According to this MSDN discussion , it can be done by one of the following methods.

1. parent.window.Xrm.Page.data.entity.attributes.get("new_blopp").setValue(blipp)
2. _mainWindow.parent.parent.document.all["new_blopp"].innerText = blipp

I'm not entirely sure why he's also suggesting to type in the following.

_mainWindow.parent.parent.document.all["new_blopp"].value = ""

In any case, neither of them seem to be working. The first gives me permission denied and the second '_mainWindow' is not defined . Of course, I have unchecked the cross frame scripting. According to F12, there's a field called data in parent.window.Xrm.Page but it's null . When I hit debugger, I can see that parent is accessible but not parent.window - permission denied is what I get there.

How can I convey the wisdom of blipp to blopp ?

It's even more frustrating because this post and this one suggest my code should work. does it have to do with the fact that I'm running on-line version?

Answer 1

If both iframe and parent are in the same domain. (pure javascript )

To get blipp (in iframe) into blopp (in parent)

var blopp = document.getElementById("ifameId").contentWindow.blipp;

To get blopp (in parent) into blipp (in iframe)

var blipp = self.parent.window.blopp;