How can I change the error message when using Google ReCaptcha version 2?

Question

When multiple photos are selected for the Google ReCaptcha version 2, it displays the following error message:

\"Multiple correct solutions required - pl

Answer 1

I think it's not possible to do server-side (at google). This rather might be done client-side by leveraging js to substitute HTML of the newly received reCaptcha pictures code:

HTML

Multiple correct solutions required – please solve more.

so you find this line of code and replace:

JS (Jquery)

$('.rc-imageselect-incorrect-response').text('Custom message');

When?

This action you should perform each time after XHR https://www.google.com/recaptcha/api2/userverify?k=6LdYKQkTAAAAAD9K6-kHspFU... is complete. Yet since this ajax request is done by google's reCaptcha's api code, it's not that easy to catch up with it.