How to disable Javascript when using Selenium?

Question

I am wondering how do I disable javascript when using selenium so I can test server side validation.

I found this article but I don\'t know what to really do. Like I

Answer 1

You can disable javascript using selenium at runtime by using the code:

from selenium import webdriver

options= webdriver.ChromeOptions()

chrome_prefs = {}
options.experimental_options["prefs"] = chrome_prefs
chrome_prefs["profile.default_content_settings"] = {"javascript": 2}
chrome_prefs["profile.managed_default_content_settings"] = {"javascript": 2}
driver = webdriver.Chrome("your chromedriver path here",options=options)

driver.get('https://google.com/search?q=welcome to python world')

Example image here:-https://i.stack.imgur.com/DdKZQ.png

Answer 2

If you want solution with chrome, chromedriver, Python. This works for any version of chrome, assuming the layout for disabling JS remains same.

from selenium import webdriver
from selenium.webdriver import ActionChains
from time import sleep

path = 'chrome://settings/content/javascript'
options = webdriver.ChromeOptions()
options.binary_location = "/usr/bin/chromium"
driver = webdriver.Chrome(chrome_options=options)
driver.get(path)
# clicking toggle button
sleep(1)
ActionChains(chrome_driver).send_keys(Keys.TAB).send_keys(Keys.TAB).send_keys(Keys.ENTER).perform()
driver.get('https://www.google.com/')

Answer 3

The following works as of late 2019 with geckodriver 0.24.0 ( 2019-01-28) and Python 3.6.9 (and possibly other nearby versions.)

from selenium import webdriver
from selenium.webdriver.firefox.options import Options

options = Options()
options.set_preference('javascript.enabled', False)
driver = webdriver.Firefox(firefox_options=options)
driver.get('about:config') # now you can filter for javascript.enabled and check

about:config shows false for javascript.enabled.

Answer 4

It looks like creating this file will give you the functions that you need to disable javascript for your test. You will call the "doDisableJavascript" function before you begin the test and the "doEnableJavascript" function when you want to enable it again.

Answer 5

As of 2018 the above solutions didn't work for me for Firefox 61.0.1 and geckodriver 0.20.1.

And here is a solution which works.

from selenium import webdriver
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary

browser_exe = '/path/to/firefox/exe'
browser_driver_exe = '/path/to/geckodriver/exe'

firefox_binary = FirefoxBinary(browser_exe)

profile = webdriver.FirefoxProfile()
profile.DEFAULT_PREFERENCES['frozen']['javascript.enabled'] = False
profile.set_preference("app.update.auto", False)
profile.set_preference("app.update.enabled", False)
profile.update_preferences()

driver = webdriver.Firefox(
    executable_path=browser_driver_exe,
    firefox_binary=firefox_binary,
    firefox_profile=profile,
)

driver.get("about:config")

Now in the search bar type javascript and you should see the following.

Answer 6

I was trying to solve this problem and found this blog but the first post has a link that is no longer valid. But I finally found the code to place inside the user-extensions.js that works. Here it is:

Selenium.prototype.doDisableJavascript = function() {
    setJavascriptPref(false);
};

Selenium.prototype.doEnableJavascript = function() {
    setJavascriptPref(true);
};

function setJavascriptPref(bool) {
   prefs = Components.classes["@mozilla.org/preferences-service;1"]
           .getService(Components.interfaces.nsIPrefBranch);
   prefs.setBoolPref("javascript.enabled", bool);
}

Hope this save the time it took me to find it.