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 friend

Answer 1

I was looking for a way of scrolling through a dynamic webpage, and automatically stopping once the end of the page is reached, and found this thread.

The post by @Cuong Tran, with one main modification, was the answer that I was looking for. I thought that others might find the modification helpful (it has a pronounced effect on how the code works), hence this post.

The modification is to move the statement that captures the last page height inside the loop (so that each check is comparing to the previous page height).

So, the code below:

Continuously scrolls down a dynamic webpage (.scrollTo()), only stopping when, for one iteration, the page height stays the same.

(There is another modification, where the break statement is inside another condition (in case the page 'sticks') which can be removed).

    SCROLL_PAUSE_TIME = 0.5


    while True:

        # Get scroll height
        ### This is the difference. Moving this *inside* the loop
        ### means that it checks if scrollTo is still scrolling 
        last_height = driver.execute_script("return document.body.scrollHeight")

        # 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:

            # try again (can be removed)
            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")

            # check if the page height has remained the same
            if new_height == last_height:
                # if so, you are done
                break
            # if not, move on to the next loop
            else:
                last_height = new_height
                continue

Answer 2

This is how you scroll down the webpage:

driver.execute_script("window.scrollTo(0, 1000);")

Answer 3

For my purpose, I wanted to scroll down more, keeping the windows position in mind. My solution was similar and used window.scrollY

driver.execute_script("window.scrollTo(0, window.scrollY + 200)")

which will go to the current y scroll position + 200

Answer 4

The easiest way i found to solve that problem was to select a label and then send:

label.sendKeys(Keys.PAGE_DOWN);

Hope it works!

Answer 5

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);

Answer 6

The ScrollTo() function doesn't work anymore. This is what I used and it worked fine.

driver.execute_script("document.getElementById('mydiv').scrollIntoView();")