I’m trying to extract complete data from an embedded table using Selenium WebDriver, but I can’t get the scrolling to work properly. The table doesn’t respond to normal scrolling methods.
I’ve attempted multiple approaches including JavaScript execution, ActionChains, and direct element interaction, but none seem to trigger the table scroll. The page appears to have a custom scrolling mechanism that doesn’t work with standard automation techniques.
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.keys import Keys
from selenium.webdriver import ActionChains
import time
def extract_table_data(page_url):
driver = webdriver.Chrome()
driver.maximize_window()
try:
driver.get(page_url)
time.sleep(5)
# Attempt 1: Send keys to table element
table_element = driver.find_element(By.ID, 'dataTable')
table_element.send_keys(Keys.ARROW_DOWN)
# Attempt 2: JavaScript scroll
driver.execute_script("document.getElementById('dataTable').scrollTop = 400")
# Attempt 3: ActionChains movement
actions = ActionChains(driver)
actions.move_to_element(table_element).perform()
except Exception as error:
print(f"Error occurred: {error}")
finally:
driver.quit()
if __name__ == "__main__":
extract_table_data("https://example-table-url.com")
Has anyone successfully automated scrolling on similar embedded table interfaces? What element selectors or methods work best for this type of custom scrolling?
I’ve hit this exact problem tons of times with custom tables. Usually the issue is that the table has its own scrollable container inside the main element.
Find the actual scrollable div within your table. Most embedded tables have a wrapper div that handles scrolling, not the table element itself.
# Look for scrollable containers inside the table
scrollable_div = driver.find_element(By.CSS_SELECTOR, '#dataTable .scrollable-content')
# or try
scrollable_div = driver.find_element(By.CSS_SELECTOR, '#dataTable div[style*="overflow"]')
# Then scroll that specific element
driver.execute_script("arguments[0].scrollTop = arguments[0].scrollHeight", scrollable_div)
Another thing that works well is using wheel events directly on the table area. Some custom implementations only respond to mouse wheel actions.
driver.execute_script("""
var element = arguments[0];
var event = new WheelEvent('wheel', {
deltaY: 500,
bubbles: true,
cancelable: true
});
element.dispatchEvent(event);
""", table_element)
I had a similar case last year where the table only responded to specific scroll events. The key was inspecting the DOM to find which element actually had the scroll listener attached.
Also check if there are pagination controls or lazy loading triggers that might be easier to automate than scrolling.
Check if the table’s inside an iframe first. I’ve wasted hours debugging this exact issue only to find out the table was in a separate frame that I needed to switch to.
# Switch to iframe if present
iframes = driver.find_elements(By.TAG_NAME, 'iframe')
if iframes:
driver.switch_to.frame(iframes[0])
Try simulating real user scrolling - hover over the table then do small scroll increments. Some custom tables only respond to “natural” scrolling patterns.
# Hover over table first
actions = ActionChains(driver)
actions.move_to_element(table_element).perform()
time.sleep(1)
# Multiple small scrolls instead of one large scroll
for i in range(10):
driver.execute_script("arguments[0].scrollTop += 50", table_element)
time.sleep(0.2)
Check the browser console for JavaScript errors when you scroll. Sometimes the custom scroll breaks because of missing dependencies or timing issues, and fixing those errors solves the whole automation problem.
