Tunbosun Ayinla on "ReferenceError: jQuery is not defined"

Hi vk011,
The problem is from this code

<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/jquery-ui.min.js?ver=4.0" type="text/javascript"></script>
    <script src="http://l/demorwpspro/wp-includes/js/jquery/jquery.js?ver=1.11.1" type="text/javascript"></script>
    <script src="http://l/demorwpspro/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.2.1" type="text/javascript"></script>

No need for you to do that WordPress comes bundled with jquery and jquery ui.

To know more about adding javascript files to your WordPress themes or plugin visit this link http://codex.wordpress.org/Function_Reference/wp_enqueue_script

So remove the highlighted files and lets know if the problem still persist.