This is one of the most important chapters, focusing on handling popups and alerts. Every website nowadays has some sort of popup and in this chapter, we will see what popups and alerts are and how to handle them.

The following topics will be covered in this chapter:

• Window handles
• Modal and non-modal dialogs
• Understanding the set interface
• Getting to know iterators
• A look at pop-up windows and alerts
• Creating a demo page for popups and alerts
• A look at frames and iframes
• Mobile popups and alerts