jquery validation only digits

Question

I am having the jquery.validate.js plugin and it is working fine for me.

My question is :

I am having a textbox and this textbox is mandatory and should only accept digits.

In the js, I can see that there is validation for the digits and the problem is that I do not know how to use it.

I only knew how to make the field required by putting in the textbox field <class="required">

So, how can I add one more validation criteria to accept only digits.

Thanx

Answer 1

to check it add

$("#myform").validate({   rules: {     amount: {       required: true,       digits: true     }   } }); 

http://docs.jquery.com/Plugins/Validation/Methods/digits

Answer 2

$("#mobile_number").validate({             rules: {                  mobile_number: {required: true,number:true}             },             messages: {                 mobile_number: {required: "Please Enter Your Mobile Number",number:"Please enter numbers Only"}             }   });