Not sure that I understand the problem.

To prevent submit you will need to reverse the thing.

If there is a problem with the data you should

 

return [false,"Does not exists"];

 

and true if everything is ok.

 

Regards

beforesubmit firing return. return[true,"Not Exists"];  .before ajax server response.. why?

how to manage this?

means I want to check before insert data. user name is exist or not..?

if have data return. return[false,"Exists"]; or don't have return[true,"Not Exists"];

after ajax server response

I am use ajax validation.  it's working perfectly but..!. return firing before ajax response.

can help me

sorry for my bad english

with best regards