JQuery - How to concatenate text with .each?

First of all, excuse me for my bad english.

I've tried various methods but haven't had any luck as of yet.

I'm returning a series of objects with .each()method.

I'd like to populate the "value" attribute of a input field with each value from the object. I didnt find a way to do the same thing as PHP .=

Any idea would be great!

Here's my code :

$.each($("input[type='checkbox']:checked"), function(){
        var data = $(this).parent().parent().find("td:eq(1)"); 
         $("#login").val(data.text());
    })