Record number of Words in tinyMCE editor in Units, shows alert when limit exceeds.

functions.php

add_action('wp_footer',function(){
    if(!is_page(vibe_get_option('create_course'))){
        return;
    }
    
    ?>
    <script>
    jQuery(document).ready(function($){
      var word_limit = 200;
      $('#course_curriculum').on('active',function(){
            
            tinymce.activeEditor.on('KeyUp',function(){
                var body = tinymce.activeEditor.getBody();
                var content = tinymce.trim(body.innerText || body.textContent);
                
                content = $.trim(content.replace( /[^\w ]/g, " "));
                var word_count = content == "" ? 0 : content.split( /\s+/ ).length;
                
                if(word_count > word_limit){
                  //Show some message etc.
                  alert('word limit exceeded by '+(word_count - word_limit));
                }
            });
      });
    });
    </script>
    <?php
});