Validator Framework Vs JavaScript

[Sandeep Vaid]

As javascript has some limitations like oldier browsers doesn't support it and once can disable javascript in it's browser, javascript will execute is not gaurrented. Other option is server side validation like Validator Framework but it's a server trip and hence will take more time.Also not all view level validation can be performed immediately (like disabling/enabling controls)

Can we combine javascript and validator in a way such that if user is using new browsers with javascript enabled, validation will be done on client side else on server side..The drawback of this approach is that we need to write 2 validations (client Side and server side) which will also be hard to maintain.

What are the best practices in struts to do the validation ?