What are Alerts in Selenium?
An Alert is nothing but a small message box that appears on the screen to give some kind of information and give a warning for a potentially damaging operation or permission to perform that operation.
How to Handle Alert in Selenium using Java?
Imagine filling out a form online and accidentally missing some information. You only know if you made a mistake if the website tells you somehow, like with a pop-up message. This article explains what those pop-up messages are called in Selenium (alerts) and how to deal with them in your automated tests.