Why "else" condition does not make, when "if" does not apply?

I wanna run different js script, when something is true and something is false. If something is True, it runs, but if it's anything else, "else" does not make. Do you know why?

Code from login.py

class Login():
    def checkVal(email, password):
        if db.wowband.find({"email":email, "password":password}).count() == 1:
            return True
        else:
            return False

Code from wow.py (default script)

def hello_world():
    loginForm = LoginForm()

    if request.method == "POST" and loginForm.validate():
        logRes = Login.checkVal(loginForm.email.data, loginForm.password.data)
        print(logRes)
        return render_template('index.html', loginForm=loginForm, registrationForm=registrationForm, logRes=logRes)

    return render_template('index.html', loginForm=loginForm, registrationForm=registrationForm)

Code from forms.py

class LoginForm(Form):
    email = EmailField('email', [validators.Email(), validators.DataRequired()])
    password = PasswordField('password')
    login = SubmitField('login')

And code from html file with conditions