TypeError: validation is not a function js code example

Example: javascript validate is not a function problem

Functions that arent need to load at the beggining of the page, should have 
defer, loading the scripts correctly, example:
<script type="text/javascript" src="~/lib/jquery/dist/jquery.min.js"></script>
<script type="text/javascript" src="~/lib/jquery-validation/dist/jquery.validate.min.js" defer></script>
<script type="text/javascript" src="~/EmailValidation.js" defer></script>