Click the javascript popup through webdriver

Question

I am scraping a webpage using Selenium webdriver in Python

The webpage I am working on has a form. I am able to fill the form and then I click on the Submit button.

It generates an popup window (Javascript Alert). I am not sure, how to click the popup through webdriver. How to do it ?

Meci Matt · Answer 1 · Aug 8, 2018

Python Webdriver Script:

from selenium import webdriver

browser = webdriver.Firefox()
browser.get("http://sandbox.dev/alert.html")
alert = browser.switch_to_alert()
alert.accept()
browser.close()

Webpage (alert.html):

<html><body>
    <script>alert("hey");</script>
</body></html>

Running the webdriver script will open the HTML page that shows an alert. Webdriver immediately switches to the alert and accepts it. Webdriver then closes the browser and ends.

If you are not sure there will be an alert then you need to catch the error like this:

from selenium import webdriver

browser = webdriver.Firefox()
browser.get("http://sandbox.dev/no-alert.html")

try:
    alert = browser.switch_to_alert()
    alert.accept()
except:
    print "no alert to accept"
browser.close()

If you need to check the text of the alert, you can get the text of the alert by accessing the text attribute of the alert object:

from selenium import webdriver

browser = webdriver.Firefox()
browser.get("http://sandbox.dev/alert.html")

try:
    alert = browser.switch_to_alert()
    print alert.text
    alert.accept()
except:
    print "no alert to accept"
browser.close()