There are many Church Registers for West Yorkshire on Ancestry - going up to the mid 1900s.
If they married in a Church included amongst those, you would be able to see a Parish Record copy of the marriage certificate. However if they married in a Register Office, or a Registrar attended at a Non-Conformist Church - you won't find them there.
I have had a look and can't see them (someone else might do - I can be a bit of a dope sometimes!)
Unfortunately, as Carole has said, you will need to go to the Registry Office to see a copy - at a fee of course.