[Need Suggest] The best validation library technic

Question

I want to write a plugin to validate forms. I have made detailed research about that but I want to write it with my own way. I dont want to write so many lines of code when using the library. It should be easy to use.

I found a jQuery library for validation. It uses HTML classes. For example if you want to a field with presence validation you just add the field required class done but I am not sure this is this is clear way. So I am confused with this, so anyone can tell me which is the best way to write a form validation library?

Answer 1

Actually the I found the jQuery validation plugin way is a very nice of dealing with validation logic. Here are some my reasons for it..

• Its un-intrusive. You need no extra markup on your form elements.
• Used by many other plugins so replacing one with a better one should be relatively simple
• Elements having same class will get same validation logic and chance of missing is rare (all date elements will get same date logic, although you can easily override)
• You can use the same class to add extra logic and same UI look and feel (obvious) too and you are sure that they all behave the same. (I add a jquery rule to make all date elements has a date picker too)
• Adding and removing rules can be done relatively easy with out change to your markup.

Answer 2

I the method you describe is a good one. You can easily query anything with a class of "required", determine its type and check for a selected value. You can do this for all input types.