Comment by captn3m0

The author also maintains https://disable-javascript.org/, which the pop-up links to. And has the exact script + titles used.

> You may want to consider linking to this site, to educate any script-enabled users on how to disable JavaScript in some of the most commonly used browsers. The following code uses scare tactics to do so.

> When added to your website, it will change the icon and the title of your website's tab to some of the most unhinged things imaginable once the user sends your tab to the background. Upon re-activation, the script will display a popover to the user informing them about the joke and referring them to this initiative.