Multiple reCAPTCHAs in one ASP.Net page

Question

It is possible to add multiple reCAPTCHAS in one form? I tried doing so, even giving the multiple reCAPTCHAS different IDs, but when I load the page in the browser, only one

Answer 1

I was initially lead by this thread to believe there is no simple answer, but after digging through the Recaptcha ajax library I can tell you this isn't true! TLDR, working jsfiddle: http://jsfiddle.net/Vanit/Qu6kn/

It's possible to overwrite the Recaptcha callbacks to do whatever you want with the challenge. You don't even need a proxy div because with the overwrites the DOM code won't execute. Call Recaptcha.reload() whenever you want to trigger the callbacks again.

function doSomething(challenge){
    $(':input[name=recaptcha_challenge_field]').val(challenge);
    $('img.recaptcha').attr('src', '//www.google.com/recaptcha/api/image?c='+challenge);
}

//Called on Recaptcha.reload()
Recaptcha.finish_reload = function(challenge,b,c){
    doSomething(challenge);
}

//Called on page load
Recaptcha.challenge_callback = function(){
    doSomething(RecaptchaState.challenge)
}

Recaptcha.create("YOUR_PUBLIC_KEY");