What is WebDriver and why is it needed?

WebDriver is an interface for automating browser control. It allows programmatic management of the browser: opening pages, clicking on elements, entering text, retrieving data from the page, etc.

Why WebDriver is needed:

• For automated testing of web applications (functional, integration testing).
• To automate routine actions in the browser.
• For parsing dynamic content loaded with JavaScript.

Example of using WebDriver in Python with Selenium:

from selenium import webdriver

# Create a browser instance
driver = webdriver.Chrome()

# Open a page
driver.get('https://example.com')

# Find an element and click
button = driver.find_element_by_id('submit')
button.click()

# Close the browser
driver.quit()

WebDriver is standardized by W3C, ensuring compatibility with different browsers.