Ways to determine if a web browser is executing javascript code (without altering the javascript on the webpage)

Working on creating a custom PHP client for Selenium, I've encountered an issue with implementing the waitForPageToLoad() function:

The problem lies in just checking the document.readyState, as there could be JavaScript scripts running on the page (like animations triggered by button clicks) that should prolong the wait. This results in the document.readyState returning a status of complete before the actual loading is finished.

Additionally, using callbacks is not feasible as I cannot predict all the JavaScript that may run on the page. I am able to insert some JavaScript onto the page, but it must not interfere with its normal operation.

Any suggestions for a potential solution? Currently using the latest version of Firefox browser.

Thank you.

javascriptbrowserselenium

Answer №1

It's not possible to determine if JavaScript is currently running.

You can opt to wait for certain elements to appear on the page.

In Python, a solution would look something like this:

from selenium.webdriver.support import expected_conditions as EC  # ignore

driver = webdriver.Chrome(...)

el = WebDriverWait(driver, 10).until(
    EC.presence_of_element_located((By.XPATH, "//a"))  # customize as needed
)

For more information, refer to: http://selenium-python.readthedocs.io/waits.html

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