After submit redairect to speafics URL based on input value

/*Contact form 7 এ ফর্ম সাবমিট করার পরে কন্ডিশনাল ভাবে কাস্টম*/
on_sent_ok: " if (document.getElementById('input_fuild_d').value=='£30')
{
location.replace('http://www.domain.com/30');
} elseif (document.getElementById('input_fuild_d').value=='£55')
{
location.replace('http://www.domain.com/55');
} else {
location.replace('http://www.domain.com/thankyou');
} "