Mark error in form using Bootstrap

Question

I\'ve started using Bootstrap in order to achieve a nice page design without resorting to GWT (the backend is made in java)

For my login screen I copied this example

Answer 1

Can use CSS to show error message only on error.

.form-group.has-error .help-block {
    display: block;
}

.form-group .help-block {
    display: none;
}



  Input with error
  
  Please correct the error