Use JavaScript executor to scroll and get page title

Preconditions (2)

Step 1: Open the browser and navigate to https://example.com

Step 2: Use JavaScript executor to scroll down 500 pixels vertically

Step 3: Use JavaScript executor to get the page title

Step 4: Verify the page title matches 'Example Domain'

✅ Expected Result: The page scrolls down 500 pixels and the page title is 'Example Domain'

Automation Requirements - Selenium with Python

Assertions Needed:

Verify the page title is exactly 'Example Domain'

Best Practices:

Use explicit waits to ensure page is loaded before executing JavaScript

Use driver.execute_script() for JavaScript execution

Avoid hardcoded waits like time.sleep()

Use clear and descriptive variable names

Automated Solution

Selenium Python

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

# Setup Chrome WebDriver
service = Service()
driver = webdriver.Chrome(service=service)

try:
    driver.get('https://example.com')

    # Wait until the page title contains 'Example Domain'
    WebDriverWait(driver, 10).until(EC.title_contains('Example Domain'))

    # Scroll down 500 pixels vertically using JavaScript executor
    driver.execute_script('window.scrollBy(0, 500);')

    # Get the page title using JavaScript executor
    page_title = driver.execute_script('return document.title;')

    # Assert the page title is exactly 'Example Domain'
    assert page_title == 'Example Domain', f"Expected title 'Example Domain' but got '{page_title}'"

finally:
    driver.quit()

This script opens the browser and navigates to https://example.com.

It waits explicitly until the page title contains 'Example Domain' to ensure the page is fully loaded.

Then it uses driver.execute_script() to scroll down 500 pixels vertically.

Next, it uses JavaScript executor again to get the page title directly from the browser.

Finally, it asserts that the page title exactly matches 'Example Domain'.

The try-finally block ensures the browser closes even if the test fails.

Common Mistakes - 4 Pitfalls

Using time.sleep() instead of explicit waits

Not using driver.execute_script() for JavaScript execution

Not verifying the page title after getting it with JavaScript

Using vague or incorrect selectors for elements when not needed

Bonus Challenge

Now add data-driven testing to scroll different pixel values: 100, 300, and 700

Show Hint