reCaptcha in Newform.aspx

Question

I am looking to see if recaptcha could be implemented with newform.aspx? Ex. make captcha response required and only then allow submission of list item?
https://www.enjoysharepoint.com/google-recaptcha-sharepoint/

Answer 1

You could take a reference to the PreSaveAction function.
Use Of PreSaveAction Function on List Forms
Only if PreSaveAction returns true, the created item will be successfully saved. You can use the captcha response result as the return value of PreSaveAction, if the return value of the captcha response is the boolean type.

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Answer 2

here is another example which uses PreSaveAction for disabling Save button when some checkboxes are not checked: Sharepoint 2013 newform.aspx trying to disable save button until multiple check boxes are ticked. In your example instead of checkboxes recapcha will be used but idea will remain the same.