Filtering SharePoint Note Board

noteboardfilter.js

$(function() {
  $('.ms-socialCommentEdit').each(function() {
    var $wp = $(this).closest('[webpartid]');
    var $search = $('<input>').keyup(function() {
      $wp.find('.ms-socialCommentItem').hide();
      $wp.find('.ms-socialCommentItem').filter(function() {
        return $(this).find('.socialcomment-contents').text().toLowerCase().indexOf($search.val().toLowerCase()) >= 0;
      }).show();
    });
    $wp.prepend($search);
  });
});