Getting error – Uncaught TypeError: undefined is not a function

Hello

I am wrote a jQuery and enqueue it. This is not the first time I am doing this. But stuck this time. jQuery not working. I checked the chrome console and I found in front of my file error message – Uncaught TypeError: undefined is not a function

I unqueue the script in functions.php and it is loading correctly in footer. My code for enqueuing-

function mynew()
{
	wp_register_script('changing',get_template_directory_uri().'/js/change.js','',null,true);
	wp_enqueue_script('changing');
}

add_action(‘wp_enqueue_scripts’,’mynew’);

Change.js contain this code

jQuery(document).ready(function($)
{
	$('#set1 li').click(function()
	{
		$(this).siblings().removeclass('selected'); //remove the 'selected' class from siblings

		$(this).addclass('selected'); // add the 'selected' class to the clicked item

		$('.container1 li').hide(); // hide all the second level li's

		$('.container1 li:eq(' +$(this).index() + ')').show(); //show the same li with same index
	});

and html code in template file looks like this

<div class="box_set">
  <div class="box">
    <div id="set1">
    	<ul>
        	<li class="selected"><img src="<?php bloginfo('template_url'); ?>/images/guaranteed.png" alt="guaranteed" /></li>
            <li><img src="<?php bloginfo('template_url'); ?>/images/customizable.png" alt="customizable" /></li>
		</ul>
    </div><!--set1 end-->

    <div class="container1">
	<ul>
    	<li><img src="<?php bloginfo('template_url'); ?>/images/tree-tuner.png" /></li>
        <li class="invisible"><img src="<?php bloginfo('template_url'); ?>/images/tree-lock.png" /></li>
	</ul>
    </div> <!--container1 end-->
    <div class="clearfix"></div>
   </div><!--box end-->
 </div><!-- box_set end-->

Where is the problem ?