How to check if an alert is present on a page with JavaScript or Selenium

You can disable alerts with:

window.alert = () => false

from python that's:

driver.execute_script("window.alert = () => false")

javascript python selenium

Use :

prefs.setIntPref("permissions.default.desktop-notification",  1);

javascript python selenium

Assume one is present on the exception of a non located element within a try/catch block, then try to use

driver.switchTo().alert().dismiss();

to proceed with the entended behavior :)

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