控制瀏覽器滾動條不成功的解決方法

#coding=utf-8
from selenium import webdriver
import time

dr = webdriver.Chrome()
dr.get("http://www.baidu.com")



dr.find_element_by_id("kw").send_keys("selenium")
dr.find_element_by_id("su").click()
time.sleep(3)

'''下列方法親測不成功
js = "var q=document.documentElement.scrollTop=10000"
dr.execute_script(js)
time.sleep(3)

js = "var q=document.documentElement.scrollTop=0"
dr.execute_script(js)
time.sleep(3)
'''
#下列方法可實現滾動條滾動效果
dr.execute_script("window.scrollBy(0,2000)")
time.sleep(3)

dr.execute_script("window.scrollBy(0,-2000)")
time.sleep(3)
dr.quit()