Sometimes, on WordPress site is appearing the issue, when users can submit form (Contact form 7) multiple times, to spam your mailbox. I’ll explain the way to prevent it.
1. Form creation
Create contact form in your admin and put it in desirable place on your site.
2. Adding cookies function
Add cookies getter-setter somewhere in your JS file. We will hold that cookies 5 minutes, before user can submit form again.
3. Adding code
It’s time to add our code to js-file.
Check full code from GitHub gists.
