问题
I am opening a paypal window from the parent with window.open(). After payment and redirecting back to my page (in the popup window), I would like to close the popup and update the parent window URL.
I found out this works over window.opener.location.
However the console shows
window.opener.location is null
after redirection because as the child window changes, the popup looses the information about the opener.
Well great. Now is there any way to get around this? Maybe adding a sort of \"listener\" to the parent who listens to the URL of the child?
回答1:
window.opener is removed whenever you navigate to a different host (for security reasons), there is no way around it. The only option should be doing the payment in a frame if it is possible. The top document needs to stay on the same host.
回答2:
First you can have a timer function in the parent windows to check whether the child window is opened or closed at particular time interval say 100ms or so. If it is closed then you can reload the parent window.
回答3:
The issue with window.opener in IE is when you using localhost site and the internet site like paypal. Simply change location of your local host from Local Intranet to the Internet zone and the opener will not be null.
来源：https://stackoverflow.com/questions/7120534/window-opener-is-null-after-redirect