In my previous post, I provided the link to a working code.

Below is the JS code:

$('textarea').keyup(function() {
    
  var characterCount = $(this).val().length,
      current = $('#current'),
      maximum = $('#maximum'),
      theCount = $('#the-count');
    
  current.text(characterCount);
 
  
  /*This isn't entirely necessary, just playin around*/
  if (characterCount < 70) {
    current.css('color', '#666');
  }
  if (characterCount > 70 && characterCount < 90) {
    current.css('color', '#6d5555');
  }
  if (characterCount > 90 && characterCount < 100) {
    current.css('color', '#793535');
  }
  if (characterCount > 100 && characterCount < 120) {
    current.css('color', '#841c1c');
  }
  if (characterCount > 120 && characterCount < 139) {
    current.css('color', '#8f0001');
  }
  
  if (characterCount >= 140) {
    maximum.css('color', '#8f0001');
    current.css('color', '#8f0001');
    theCount.css('font-weight','bold');
  } else {
    maximum.css('color','#666');
    theCount.css('font-weight','normal');
  }
  
      
});

Check if this might help you?