javascript - Responsive drop down menu not rendering -


i'm trying create responsive drop down navigation menu webpage. have working drop down menu, want make when screen reaches size, ☰ icon menu items. however, when test (by re-sizing browser), see drop down menu displayed block element, , ☰ icon doesn't show. here fiddle code:

http://jsfiddle.net/lwdc4/

my javascript code in external file. file looks like:

$("#nav").addclass("js").before('<div id="menu">&#9776; </div>'); $("#menu").click(function(){     $("#nav").toggle();  });  $(window).resize(function(){     if(window.innerwidth > 768){         $("#nav").removeattr("style");      } });

and import html:

<head>  <title>title</title>      <link rel="stylesheet" type="text/css" href="nav-menu.css"     <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>     <script src="nav-menu.js"></script>    </head>

what wrong code? appreciated. in advance.

you need add jquery library use $ object

add line in html use it

<script type="text/javascript" src="http://code.jquery.com/jquery-1.11.0.min.js"></script>

or choose version directly on jquery website http://jquery.com/download/

updated fiddle : http://jsfiddle.net/lwdc4/1/


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