How Can I Write Text That The Clipboard Sees But Isn't Visible?

Until recently I'd been using style=display:none on an image to do this with its alt text. That method is no longer working, so what can I do?

Solution 1:

<span style="font-size: 0;">i should still be copied</span>

jsFiddle.

Solution 2:

/* Fully transparent text */
color:rgba(0,0,0,0)