Change Value of Element within Python with JS and Selenium

Question

Ok first of all I don't want to annoy anyone here I'm fairly new to coding and I'm well aware that asking in these forums should be your last place to go and only after you googled for a while. Anyway I have a problem. I tried to use 2captcha for my python web scraping automation. When I run the script I get the captcha token from 2captcha and in their API documentation they said, that I have to put the Token into the Value of the Element with fc-token inside (Screenshot)

Now I would like to place the token into the value="" of the html code and then submit.

This is what I've tried so far:

    ## Gets the captcha Token
time.sleep(15)
url=str(web.current_url)
solver = TwoCaptcha(APIKEY)

try:
    result = solver.funcaptcha(sitekey='B7D8911C-5CC8-A9A3-35B0-554ACEE604DA',
                               url=url,
                               surl='https://client-api.arkoselabs.com')
except Exception as e:
    sys.exit(e)

print(result['code'])
## The Captcha Token
token= result['code']

time.sleep(10)

##Switching to the right Iframe 
web.switch_to.frame('enforcementFrame')

##Here Im trying to change the value of the Element "FunCaptcha-Token" with JS
web.execute_script('''
  let {token} = arguments
  document.querySelector('FunCaptcha-Token').value = token
''', token)

Now when I run the script I get the token so the 2captcha part should work but the JS in Python part doesn't work. Thats the error code I get:

KeyError: 'document.getElementById("FunCaptcha-Token").value=87260ba9ceb681253.3489941501|r=us-ea [...] continues with the token

Now I'll add the HTML code.

<input type="hidden" id="FunCaptcha-Token" name="fc-token" value="91560ba8aabd2a839.9381249805|r=eu-west-1|metabgclr=%23ffffff|maintxtclr=%231B1B1B|mainbgclr=%23ffffff|guitextcolor=%23747474|metaiconclr=%23757575|meta=7|lang=de|pk=B7D8911C-5CC8-A9A3-35B0-554ACEE604DA|at=40|ht=1|atp=2|cdn_url=https%3A%2F%2Fclient-api.arkoselabs.com%2Fcdn%2Ffc|lurl=https%3A%2F%2Faudio-eu-west-1.arkoselabs.com|surl=https%3A%2F%2Fclient-api.arkoselabs.com">

Sorry for my long post I thank you in advance.

pguardiario · Accepted Answer · 2021-06-05 01:17:27Z

2

It should look like:

driver.execute_script('''
  let {token} = arguments
  document.querySelector('#FunCaptcha-Token').value = token
''', token)

Then you want to submit the form or run the callback

answered Jun 5, 2021 at 1:17

pguardiario

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12 Comments

Lost_coder Over a year ago

Hey thank you very much for your Answer unfortunately I can't get it to work I get this error message: selenium.common.exceptions.JavascriptException: Message: javascript error: Cannot set property 'value' of null

pguardiario Over a year ago

That means it's not there. Maybe it's in a iframe?

Lost_coder Over a year ago

Hey thanks for your quick response I actualized the code I still get the same error message.

pguardiario Over a year ago

We need to see the url, sorry.

Lost_coder Over a year ago

well that's rather difficult bc its during the sign up process of outlook.live.com

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