JQuery selector help

I'm new to jQuery and need some help understanding what this line of code means, $('.redirect', response).attr('href'). What is '.redirect' ?

    $.post(form.attr('action'), data, function (response) {
                if ($('.redirect', response).length) {
                    if ($('.redirect', response).attr('href')) {
                        window.location.href = $('.redirect', response).attr('href');
                    } else {
                } else {
matthew phungAsked:
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Steve BinkCommented:
See http://api.jquery.com/jQuery/ for full documentation.

The selector is looking for any elements with class "redirect" found within the context of the response variable.

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Probably after the form is filled and sent it is redirecting to a specific page (thank you page) or else it's reload the page
Steve BinkCommented:
Is there a reason you gave a 'B' grade?
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