How to Reload ReCaptcha using JavaScript?
For reCaptcha v2, use:
grecaptcha.reset();
If you're using reCaptcha v1 (probably not):
Recaptcha.reload();
This will do if there is an already loaded Recaptcha on the window
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(Updated based on @SebiH's comment below.)
Important: Version 1.0 of the reCAPTCHA API is no longer supported. Please upgrade to Version 2.0.
You can use grecaptcha.reset(); to reset the captcha.
Source: https://developers.google.com/recaptcha/docs/display#js_api
If you are using version 1
Recaptcha.reload();
If you are using version 2
grecaptcha.reset();