Validator.numberOfInvalids()

Validator.numberOfInvalids( errors )

Description: Returns the number of invalid fields.

Validator.numberOfInvalids( errors )
- errors
  
  Type: Object
  
  One or more key/value pairs of input names and messages.

Example:

Displays a summary of invalid fields after an invalid submit.

var validator = $( "#myform" ).validate({
  invalidHandler: function() {
    $( "#summary" ).text( validator.numberOfInvalids() + " field(s) are invalid" );
  }
});