How to Handle Alerts and Pop-ups in Selenium?

Imagine that you are filling an application form and missing some details by mistake. How do you come to know this until there is an alert or a pop-up window to tell you? Let's overview the following article to understand what are alerts in selenium and how to handle and manage them. An Alert in selenium is any message or notification box that informs the user about some information or asks for permission to perform particular tasks. It is also used for warning purposes.