For Caldera Forms, check filetype errors and prevent page navigation if detected

cf-check-filetype-error.php

<?php
/**
 * Plugin Name: CF File Error On Page Nav
 * Description: Check if a File Type error is displayed during Next page button click and prevents navigation if found.
 * Author: New0
 */

// Add jQuery to document footer
add_action('wp_footer', function(){
	?>
		<script>
			jQuery( '.cf-page-btn-next' ).click(function() {
				if( jQuery('.cf2-file-error').length > 0){
					jQuery([document.documentElement, document.body]).animate({
						scrollTop: jQuery(".cf2-file-error:contains('This file type is not allowed.')").offset().top
					}, 2000);
				}
			});
		</script>
	<?php
});