[jQuery] Selecting the first TD of every Row

[jorgeBadaBing]

I have been looking online at the documentation and don't seen to have
any luck find a way of doing this.

So far I can do this:

$("td:first").addClass("tomas");

Which applies a class to the first td it founds in the table.

How can I select the first td for every tr?

Help will be much appreciated.

Thanks!