Blocking framebusting with javascript by using the HTML5 sandbox

This page includes framebuster.html as iframe, but that sub-page will try to bust out of its frame.

But using the HTML5 sandbox feature we can prevent any included iframes from trying to bust out of their frame, as shown below. This can be done by the default sandbox option, which not allow any scripts to run

Even if we allow scripts to run in the iframe, with sandbox="allow-scripts", the iframe is still not allowed to navigate up to its parent, as shown below