How to disable a “Reload site? Changes you made may not be saved” popup for (python) selenium tests in chrome?

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Question :

How to disable a “Reload site? Changes you made may not be saved” popup for (python) selenium tests in chrome?

I am running automated (python) selenium tests on a chrome browser, and sometimes when a page is reloaded a popup appears on the screeen:

enter image description here

Is it possible to configure the chrome selenium browser in such a way, that this popup does not appear? If so, how to do that? Or are there other ways to supress this popup? Or to accept it?

Asked By: Alex


Answer #1:

This popup with text as Reload site? Changes you made may not be saved is the implementation of onbeforeunload property of WindowEventHandlers


The onbeforeunload property of the WindowEventHandlers mixin is the EventHandler for processing beforeunload events. These events fire when a window is about to unload its resources. At this point, the document is still visible and the event is still cancelable.


There are different strategies available to handle this popup.

  • Chrome solution: Using --disable-popup-blocking through ChromeOptions():

    from selenium import webdriver
    driver=webdriver.Chrome(chrome_options=options, executable_path=/path/to/chromedriver')
  • Firefox solution: Using dom.disable_beforeunload through FirefoxProfile():

    from selenium import webdriver
    profile = webdriver.FirefoxProfile()
    profile.set_preference("dom.disable_beforeunload", True)
    driver = webdriver.Firefox(firefox_profile = profile)
  • Cross Browser solution: As a Cross Browser solution, you can disable this dialog invoking the executeScript() to set window.onbeforeunload as function() {}; and you can use the following solution:

    driver.execute_script("window.onbeforeunload = function() {};")
  • JQuery based solution:

    $I->executeJS( "window.onbeforeunload = null" );

You can find a relevant discussion in How to handle below Internet Explorer popup “Are you sure you want to leave this page?” through Selenium

Answered By: DebanjanB

Answer #2:

I know this doesn’t answer the suppression part of the question, but..

Try this piece of code for accepting the popup:


Answered By: RegCent

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