Comment 3 for bug 1513665

Another update on this. The new release of clipboard.js claims that it does support text-select (in input and textareas) in Safari on iOS now. (I haven't tested this yet, firsthand.)

I guess this is a rapidly evolving area! Firefox was the last of the big three browsers to add support for Document.execCommand('copy'), and they just released that in FF 41 back in September.

So, it would still behoove us to wait a couple of weeks to see how things shake out on this. Either that, or upgrade now, but be prepared to come back and update or swap out the library as needed in the months to come. Both ZeroClipboard and clipboard.js have a quite similar API, so it is not that hard to interchange them.