[Bug:Docs] Copy button broken in Firefox

[danawoodman]

What were you trying to install (or what else went wrong)?

trying to copy the install code for a library

What exactly did you do?

hit the copy button on the zig install on this page: https://webinstall.dev/zig/

What went wrong?

nothing happened, copy failed, console produced this error:

Which OS did you try on?

macOS 14.3.1, Firefox 123.0

• [x] Mac
• [x] Windows
• [x] Linux

What type of computer (i.e. laptop, desktop, Raspberry Pi)?

• [x] Laptop or Desktop (amd64 / x86-64)
• [ ] Raspberry Pi (ARM-64)
• [ ] Other (please specify, if you know)

[HacDan]

Can confirm happens on Firefox in PopOS (Ubuntu Derivative) as well.

~~Also noticed (although should probably be a separate issue) that OS detection isn't functioning in Firefox on PopOS.~~ Seems this isn't the case. My useragent is being incorrectly displayed.

~~I'll test Firefox on MacOS tonight.~~ Can confirm I receive the same error with Firefox on MacOS(Honestly this was expected. It's an error in the handling of javascript)

[y0rune]

I confirm that error on Firefox at Mac (123.01), Windows 11, Linux :c