Count words in a textarea field and print the value in a hidden field

CF-count-textarea-words-insert-hidden-field-value.js

$(document).ready(function() {
  
//CHANGE THE IDs TO MATCH YOUR FIELDS, these are frontend IDs, usually the field ID looking like fld_7683514 will be transformed as #fld_7683514_1
		
  var textarea = "#fld_7683514_1"; //ID of the textarea we want to count words
		var hidden_value = '#fld_9053892_1'; //ID of the hidden field we want to print count in value parameter
		$(textarea).keyup(function() { word_count( textarea, hidden_value ) });

});
		
function word_count(field, count) {

  var number = 0;
  var matches = $(field).val().match(/\b/g);
  if(matches) {
    number = matches.length/2;
  }
  $(count).val( number );

}