更改表单提交的值？

Question

I have a form with two different sets of fields in a form, one is billing address and one is shipping address.

I have written some jQuery so that you can hide the shipping form and it fills it in with the details in the billing form (if you are shipping to the same address).

This is my jQuery:

$('#reveal-shipping').click(function(){
    if( $('.wpsc_checkout_table.table-2').css('display') == 'none' ){

        $('.wpsc_checkout_table.table-2').slideToggle();
        $('.wpsc_checkout_table.table-2').find('input, select, textarea').val('');
        document.getElementById('reveal-shipping').innerHTML = 'Ship to my billing address ←';

    } else {

        //fields is an array containing an array of two selector strings, one for the billing form and one for the shipping.
        for ( i=0; i < fields.length; i++ ){
            thisval = $(fields[i][0]).val();
            $(fields[i][1]).val( thisval );
        }
        $('.wpsc_checkout_table.table-2').slideToggle();
        document.getElementById('reveal-shipping').innerHTML = 'Ship to a different address &rarr;';

    }
});

I'm wondering if I can run the for loop, which is the part that fills in the hidden input elements with values, onClick of the submit button, or if the values would have already been submitted by this point.

If not, when would be a good time to run this to ensure that the values are submitted correctly? maybe onunfocus? (please tell me the actual name for this)

Thanks in advance

Answer 1

You would be able to do this on the onClick event of the submit button or you can register a submit event on the form. Your events are run before the rest of the submission takes place. This is why you can call validation methods on the form and interrupt the submission by returning the value false.

The 'onunfocus' event you are thinking of is blur