Hii,
 In this blog, I am going to share an example in which i have created a comment box using few html tags like input box and text area and i have used jquery to set the word limit and to count the number of characters typed.
Go through the example below and learn how to create a comment with word counter and to set word limit using jQuery. 

HTML:

<input id="target" type="text" style="visiblity:hidden;" maxlength="99">
<textarea id="textarea" rows="8" cols="30" maxlength="99" readonly="" ></textarea>

Javascript:

$(document).ready(function() {
  var text_max = 99;
  $('#textarea_feedback').html(text_max + ' characters remaining');

  $( "#target" ).keyup(function( event ) {
   var input = $("#target").val();
    $("#textarea").text(input );
    var text_length = $('#target').val().length;
    var text_remaining = text_max - text_length;

    $('#textarea_feedback').html(text_remaining + ' characters remaining');
  });
});

Link: Must include this external jquery library link in your file

<script src="https://code.jquery.com/jquery-1.10.2.js"></script>