javascript - jQuery change function, how to save the state like a session -

i looking way form showing , hiding fields based on values selected in dropdowns, want know is.

when select yes , field below displays click submit on form, if return form value still present field hidden again...

how can prevent happening default?

i want browser remember jquery change funtions state left @ after submit form.

what want 'refresh fields visibility' in cases. suggest create such function refreshfieldsvisibility. such function reads values dropdown , shows/hide proper field. call function:

1. when elements state changed, on('change') events.
2. when document ready (this case understand), $(document).ready
3. any other situation if necessary