Answer:
First, as the answer given by others: Yes, You can do perlscript on client side ie.. web browser provided perl is installed on the client. Most of the web users don't have perl installed on their machines.

Meditation: - Perlscript by default
Now that brings an interesting question. Javascript is not required to install on the client side an so is VBscript. They are integral part of the browser. Why not perlscript ?. Considering that there are plenty of applications written in perl as CGI application, we can certainly transform the logic from server side to client side without much modification. Browsers supporting perl script as integral part would be very good. Yes, the page developer may have to learn an additional language, but the thousands of perl programmer can get by without javascript/vbscript while creating the client-side interactive webpages.

artist