JavaScript jQueryとBootstrapを読み込んだ後、bootstrapSlideInMenu-1.0.0.min.jsを読み込んでください。 <script type="text/javascript" charset="UTF-8" src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script> <script type="text/javascript" charset="UTF-8" src="http://netdna.bootstrapcdn.com/twitter-bootstrap/3.1.1/js/bootstrap.min.js"></script> <script type="text/javascript" charset="UTF-8" src="bo