Character Counting Remaining on Textarea

text area with maxlenght that feeds how many characters the user has remaining

HTML

<p id="textarea" maxlength="99" contenteditable="true">This content is editable with a max character count of 99.</p>
<div id="textarea_feedback"></div>

CSS

html { margin:11px }
p { border: 1px solid #ccc; width: 50%; padding: .5em; }

JavaScript

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

    $('#textarea').keyup(function() {
        var text_length = $('#textarea').val().length;
        var text_remaining = text_max - text_length;

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