How to get access from cross-site popup to window.opener?

Question

I\'ve making a widget and I need to redirect a parent window to certain url, after specific event in popup, whitch base on another domain. How a can do this.

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Answer 1

In certain situations it's possible to do that, but only with different subdomains, not completely different domains. See Cross site scripting on the same domain, different sub domains.

But since postMessage() is widely available in current browsers, you should always prefer postMessage(), as @ian-kuca suggests.