async function checkLogin(userName,password){
     console.log("ide");
     console.log(userName);
     console.log(password);
     let cim = 'http://localhost:3000/users?username=' + userName + '&password=' + password;
     console.log(cim);

    ponse = await fetch('http://localhost:3000/users?username=asd&password=123', {
        method: 'GET'
    });

     console.log("valasz1");
     console.log(response);

    return response.json();
}