Can malicious sites (like onlineghostaccount.com) be trapped so they don't lock up Firefox

My wife recently ended up on a malicious site (onlineghostaccount.com) that appeared to cause Firefox to lock up. I think it trapped Firefox in an endless loop, because it wasn't even possible to close the tab or change to a different one. The only thing Firefox would respond to is a button on the malicious page that would take her to a scammer claiming to be Apple support. Fortunately, she didn't fall for it, but Firefox was rendered unusable for her until I could help her fix the problem. The quick fix to get Firefox operational again by closing Firefox, shutting off network access, and then re-launching Firefox so the malicious page can't load works, but is not helpful to non-technical people like my wife, because she doesn't understand what's happening or what to do about it. My question is: Is there any way that Firefox could detect this type of "endless loop" behavior before the page loads, prevent it from loading, and popping a warning to the user? Thanks! S.K.Ault