This plugin use for wordpress comments form js validation.
This plugin is used for WordPress comments JavaScript validation in the comment form. It provides options to set your own validation message and add Google Captcha (reCAPTCHA).
Follow the next steps in order to get and enable Google Captcha (reCAPTCHA) protection using the official Google Captcha keys:
1. Open your WordPress admin dashboard.
2. Go to Settings > Comment form js validation > Google Captch Tab.
3. Click the “Get the API Keys” link.
4. Enter your domain name and click “Create Key” button.
5. You will see your public and private keys. Copy them and paste to the appropriate fields on plugin Settings page.
6. Save changes.