Cordova Plugins Syntax in Ionic 2

ahh okay, Thanks for your help.. just one more question if you dont mind...

if I have a class.. or a page:
export class Page2 {
constructor() {

	function joe()
	{
		console.log("Jono");
	}

}
Login(){
console.log("Login Click");
}

}

Is there anyway to call the Login method in the constructor.. tried the obvious 'Login()" but it just threw errors