form validation error message not work currectly

  in my project i want to show validation custom error message. 

in my method 
1st call validation libery
2nd validation set rules 
3rd in password fields are requaird and min len 8
4th run validation 

but work like this
error say password requaird not focus on min lan and when i input password as text then alredy say password requird. 
is any link about this

Be sure that the name of your inputs match with the field in the rule, if not, you'll get that kind of problem.