Web automation: how to send JS instructions in 8.2 selenium

In the last section 8.1 How to send... In the browser js Instructions We learned some common js Instructions .
This section , Continue to study under selenium How to send js Instructions .

Just master this fixed grammar ：

driver.execute_script(js_code)   # js_code  Replace it with what you need js Instructions 

for instance ： Empty the content of Baidu homepage

from selenium import webdriver
import time

driver = webdriver.Chrome()  #  Initialize a Google browser 
driver.maximize_window()  #  Maximize browser windows 
driver.get("http://www.baidu.com")   #  Open a Baidu web page 

time.sleep(10)
js_code = 'document.body.innerText = ""'   #  Empty web page 
driver.execute_script(js_code)
time.sleep(2)

matters needing attention ：
1、 commonly python Code and js Wait a while between the codes , Otherwise, it may be executed before the page is loaded js Code can go wrong .
2、 time.sleep(10) It cannot be replaced by implicit waiting （ Wait until the element appears ）; You can use explicit waiting （ etc. url Execute when it is a certain value ）