How to see the remembered passwords | passwords autofill Cracked

I am going to teach you how to see the passwords which are shown as astersik characters(*).

What is the use?

if your friend/lover select the remember passwords option when login,then you got the chance to hack their password without much effort(no need of phishing ).


Two cases:

Case I: 
if they select remember password in mozilla popup. It is easy to see the password using this method:How