[jQuery] how insert (prev) id into .before statement?

[jQuery] how insert (prev) id into .before statement?


Hi,
I have a field
<input id=123 type=text>
and want to get
<input type=hidden value=myid><input id=myid type=text>
so I can't realize how to get id and add it to "before" statement.
something like
$("input:text").before("<input type=hidden value= >") ??