How can I scroll a web page using selenium webdriver in python?

Question

I am currently using selenium webdriver to parse through facebook user friends page and extract all ids from the AJAX script. But I need to scroll down to get all the friends. How can I scroll down in Selenium. I am using python.

Answer 1

You can use

driver.execute_script("window.scrollTo(0, Y)") 

where Y is the height (on a fullhd monitor it's 1080). (Thanks to @lukeis)

You can also use

driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

to scroll to the bottom of the page.

If you want to scroll to a page with infinite loading, like social network ones, facebook etc. (thanks to @Cuong Tran)

SCROLL_PAUSE_TIME = 0.5

# Get scroll height
last_height = driver.execute_script("return document.body.scrollHeight")

while True:
    # Scroll down to bottom
    driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")

    # Wait to load page
    time.sleep(SCROLL_PAUSE_TIME)

    # Calculate new scroll height and compare with last scroll height
    new_height = driver.execute_script("return document.body.scrollHeight")
    if new_height == last_height:
        break
    last_height = new_height

another method (thanks to Juanse) is, select an object and

label.sendKeys(Keys.PAGE_DOWN);