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https://mathiasbynens.github.io/rel-noopener/

Quick demonstration of why `<a rel=noopener>` is needed.
https://mathiasbynens.github.io/rel-noopener/

Last synced: 17 days ago
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Quick demonstration of why `<a rel=noopener>` is needed.

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README

        

# `rel=noopener` explained

TL;DR If `window.opener` is set, a page can trigger a navigation in the opener regardless of security origin. See for some background.