How to run JavaScript code on WebDriver with execute_script() method in Python?

If you want run some client side JavaScript code in the same way as JavaScript code embedded in the Web page source code, you can use the execute_script() method as describe below:

1. Load the Web page to a WebDriver object like (driver.get(url);).

3. Execute any JavaScript code string by calling the execute_script() or execute_async_script() method on the WebDriver object.

Here is an example program that uses execute_script() to change the background color of the loaded Web page.

# JavaScriptTest.py
# Copyright (c) FYIcenter.com 
from selenium.webdriver import Chrome
import time

driver = Chrome()
driver.get("http://sqa.fyicenter.com")

time.sleep(3)
script = "document.body.style.backgroundColor=\"#ffeeee\";"
driver.execute_script(script)
time.sleep(60)

driver.quit()

Run the program, you will see that the background color of the Web page changes to pink in 3 seconds.

C:\fyicenter> python JavaScriptTest.py

You can also try some other JavaScript code examples list below:

      String script = "alert(\"Hello world!\")";
      String script = "confirm(\"Hello world!\")";

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