Selenium WebDriver how to close browser popup

Question

I am writing tests for a web App using selenium webDriver and came across a scenario where when I try to close the browser I get a popup saying \"Are you sure? The page is a

Answer 1

You can interact with alerts and the like using the Alert API. Switching to the alert and confirm it would look like this (in Java):

Alert alert = driver.switchTo().alert();
alert.accept();

This is also explained in the Selenium FAQ.