class User{
    constructor(nickname, password){
        this.nickname = nickname;
        this.password = password;
    }
};
var user = new User("Usuario", "contraseña");
var nickname = document.getElementById('nickname');
var password = document.getElementById('password');
var submit = false;

var loginButton = document.getElementById('sign-in');
loginButton.addEventListener('click', signIn);

function signIn(){

    let userNickname = nickname.value;
    let userPass = password.value;

    if (userNickname == user.nickname && userPass == user.password) {
        location.href = "http://127.0.0.1/sirevo/views/admin/index.php";
    }else{
        swal(
          'Usuario o contraseña invalidos',
          'No se pudo iniciar sesión',
          'error'
        );
    }

}