Sorry I can't answer directly on jayjojayson's post but do not use that answer.

The answer contains a script that is hosted in an s3 bucket and in fact that s3 bucket seems to have been taken over and the script has been replaced by a popup telling you that you should contact them via mail.

Never embed scripts like this that you do not have control over and if you really need to for whatever reason, then at least add a Subresource Integrity (https://developer.mozilla.org/de/docs/Web/Security/Subresource_Integrity) hash so that the browser won't load a script that has been tempered with.