Introducing Selenium WebDriver

Selenium WebDriver is used for automating web browsers by using the browser's internal plugins or dll with the individual browser drivers, which are available for each individual browser.

The following diagram shows the high-level functionality of Selenium WebDriver. The JSON API parses the instructions from languages like Java, Python, and so on, and invokes and operates on the concerned browser:

Class structure of Selenium WebDriver

The following diagram is a snapshot of the class structure of Selenium WebDriver. The WebDriver interface is the parent of Remote WebDriver, which is a public class. Drivers for Internet Explorer, Firefox, Chrome, and so on inherit from the Remote WebDriver. In future chapters, we will be digging deep into these drivers: