Prevent close login screen on backbutton

Questions
1

Hello Guys,

I have a popup login screen appear if you are not login, all it’s ok but if i use backbutton (tested on android) the login screen will close i try this way without lucky:

document.addEventListener('backbutton', (e) => { 
   e.preventDefault();
})
2

In cordova app it is handled in your cordova-app.js file, you should disable it there