Question

I am newbie to jQuery,
can someone explain what this code does:

$("#currency form").submit(function(e) {

        triggers.eq(1).overlay().close();
        return e.preventDefault();
    });

Answer 1

The first line begins a function that handles the submit event of all form tag(s) in the element with ID currency.
Documentation: Selectors, submit event

The second line closes an overlay in the second element in the triggers variable.
Documentation: eq method, overlay plugin

The third line tries to prevent the submit, but isn’t completely correct. (It should be e.preventDefault(); and/or return false;)
Documentation: event.preventDefault, event handlers