What Is The Correct Syntax Checking The .readystate Of A Website In Selenium Python?

I'm trying to check the .readyState of a website using .execute_script but I keep getting an error. I'm using a pageLoadStrategy of 'none' in chromedriver so I'm trying to test tha

Solution 1:

Using pageLoadStrategy as none and then using WebDriverWait for document.readyState as interactive won't be a good approach. You can use either pageLoadStrategy or WebDriverWait for document.readyState as follows:

To configure pageLoadStrategy as None you can use either of the following solutions:

• Firefox :

  from selenium import webdriver
  from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
  
  caps = DesiredCapabilities().FIREFOX
  caps["pageLoadStrategy"] = "none"#caps["pageLoadStrategy"] = "eager"  #  interactive#caps["pageLoadStrategy"] = "normal"  #  complete
  driver = webdriver.Firefox(desired_capabilities=caps, executable_path=r'C:\Utility\BrowserDrivers\geckodriver.exe')
  driver.get("http://google.com")
  

• Chrome :

  from selenium import webdriver
  from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
  
  caps = DesiredCapabilities().CHROME
  caps["pageLoadStrategy"] = "none"#caps["pageLoadStrategy"] = "eager"  #  interactive#caps["pageLoadStrategy"] = "normal"  #  complete
  driver = webdriver.Chrome(desired_capabilities=caps, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')
  driver.get("http://google.com")
  

Using WebDriverWait to wait for document.readyState as eager:

WebDriverWait(driver, 20).until(lambda driver: driver.execute_script("return document.readyState").equals("interactive"))

Using WebDriverWait to wait for document.readyState as normal:

WebDriverWait(driver, 20).until(lambda driver: driver.execute_script("return document.readyState").equals("complete"))

You can find a detailed discussion in How to make Selenium not wait till full page load, which has a slow script?

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Outro

Do we have any generic function to check if page has completely loaded in Selenium

Solution 2:

You can move the condition into the JS:

WebDriverWait(driver, timeout=20).until(
    lambda driver: driver.execute_script('return document.readyState === "interactive"')
)
print(driver.execute_script('return document.readyState'))

If the website is in angular you can use pendingRequests.length === 0 see this answer.

Hope this helps!