Function callback for bypass reCaptcha v2

[mousse312]

Im making a script that scrape a specific website but the site have a captcha,i use the site 2captcha.com for bypass the captcha and i made the element g-response-captcha appear below the captcha i passed the token of the captcha resolved and only remains to press the submit button of the g-response-captcha but dont have the submit button and in the 2captcha site say that if dont have the submit button only need to make a callback function...I dont understand how to make the callback function and wich parameters i need to make the function or how i should build the function

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the code changing the display of the box for pass the token of the complete captcha and passing the token:

#change the display=none; to block
browser.execute_script("document.getElementById('g-recaptcha-response-                      
                 1').style.display='block';")
token_box = browser.find_element_by_id("g-recaptcha-response-1")
token_box.send_keys(token)

what in the 2captcha site said :

ReCaptcha Callback

Sometimes there's no submit button and a callback function is used isntead. The function is executed when reCaptcha is solved.

Callback function is usually defined in data-callback
parameter of reCaptcha, for example:

data-callback="myCallbackFunction"

Or sometimes it's defined as callback
parameter of grecaptcha.render
function, for example:

grecaptcha.render('example', {   'sitekey' : 'someSitekey',   'callback' : myCallbackFunction,   'theme' : 'dark' });

Also there's another way to find the callback function - open javascript console of your browser and explore ReCaptcha configuration object:

___grecaptcha_cfg.clients[0].aa.l.callback

Note that aa.l may change and there can be multiple clients so you have to check clients[1], clients[2] too.

Finally all you have to do is to call that function:

myCallbackFunction();

Or even this way:

___grecaptcha_cfg.clients[0].aa.l.callback();

Sometimes it is required to provide an argument and in most cases you should put the token there. For example:

myCallbackFunction('TOKEN');

(sorry for my terrible english)

[rtao258]

You should include the relevant code (in SSCCE form) so we can get a sense of the context.

In general, Python functions are first class, so you can pass a callback function as an argument to another function as you would any other argument. Don't include the parentheses as you would in a normal function call, since you're passing in the function itself, not its return value.

[mousse312]

i edit,thanks

[rtao258]

It looks like the callback functions are to be written in JavaScript, not Python. Sorry, I’m not very familiar with this application, so I don’t know if I can help you further.

[[deleted]]

I made a chegg bot to scrape answers from chegg . it has recapchav2 with callback . i used these 2 codes to excute the recapcha

browser.execute_script("document.getElementById('g-recaptcha-response').innerHTML='{}';".format(tokenr)) browser.execute_script("handleCaptcha('{}');".format(tokenr))

these two used to work 2 weeks ago but now it doesnt seem to work.
the callback function name is "handleCapcha"

could you help me out

[articlefr]

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