[coopsmgoops]

Maybe, but I'm pretty sure browsers block the clipboard functions unless they were triggered via user input. I don't know if a page load counts as a valid trigger.

[bovine3dom]

`document.execCommand("copy")` works without user input - https://developer.mozilla.org/en-US/docs/Web/API/Document/ex....

[earthboundkid]

Nope.

> Conditions of having this behavior enabled vary from one browser to another, and have evolved over time.

If you're not running based on a click event, you'll certainly fail.

[bovine3dom]

Perhaps extension code gets different rules. This code works in Firefox without needing interaction from the user: https://github.com/tridactyl/tridactyl/blob/5e8f94ff06bd5f14...

[earthboundkid]

Extensions get different rules.