A good clue. But I still don't know where to write the "if" statement. It would be good if you can give me an example.
On Oct 11, 10:57 pm, Don Dunbar <salemd1s...@gmail.com> wrote: > Hi, if you are using the validation plugin, I believe it has a function > "addMethod" that allows you to write your own method for the validation. It > requires a name (javascript identifier), a method to check input against ( > in your case A and B would be checked for completion) and a message to > display when there is an error (i.e. neither A nor B is filled out, or both > are). You can get the details for using the "addMethod" function at the > jQuery Docs page.http://docs.jquery.com/Plugins/Validation > The page lists demos and the function you need is toward the bottom of the > page. > > The logic is fairly straight forward : when the form is being filled out > listen for when A and B have focus, remember if either is checked or ignored > and check to make sure both are not simultaneously filled out. Check this on > submit as well. > > Good luck, > DED > > On Sun, Oct 11, 2009 at 7:42 AM, Phper <hi.steven...@gmail.com> wrote: > > > How can I write the code in the context of Jquery validate function? > > > On Oct 11, 12:43 pm, Don Dunbar <salemd1s...@gmail.com> wrote: > > > Hi, javascript has an 'xor' operator. It works just like 'or' in an 'if' > > > statement except in 'xor' only one side can be true. In a normal 'or' > > > statement either side can be true or both can. So you probably want to do > > > something like: if ( A XOR B) { } . Then only one can be true to > > continue > > > if both are true the statement returns 'false'.Hope this helps. > > > DED > > > > On Sat, Oct 10, 2009 at 10:37 PM, Phper <hi.steven...@gmail.com> wrote: > > > > > There are two input fields in a form, but only one of them is > > > > required, they are not required at the same time. Either A or B is > > > > required. ( A is required OR B is required). In other words, a user > > > > can input data to field A, or he can input data to filed B, but he can > > > > not input data to Both A and B at the same time. > > > > > How to implement this constraint in Jquery form validation?
