javascript - JSfiddle code is not working -


i trying transfering elements 1 listbox listbox in html. using below code:

question ::--this code found link stackoverflow redirects jsfiddle site, working on site not working here??

<html> <header>  <script type="text/javascript">   $(function(){     $("#button1").click(function(){          $("#list1 > option:selected").each(function(){             $(this).remove().appendto("#list2");          });     });      $("#button2").click(function(){         $("#list2 > option:selected").each(function(){             $(this).remove().appendto("#list1");         });     });  });  </script>  </header> <body>  <div>     <h3>list a</h3>     <select id="list1" multiple="multiple" rows=2>         <option value=1>option 1</option>         <option value=2>option 2</option>         <option value=3>option 3</option>         <option value=4>option 4</option>     </select>     <br/>     <input id="button1" type="button" value="move list b" /> </div> <div>     <h3>list b</h3>     <select id="list2" multiple="multiple" rows=2>             </select>     <br/>     <input id="button2" type="button" value="move list a" /> </div>  </body>   </html>

i know silly question beginner.

what did wrong here?? please me ..

add jquery file in <head></head> section this

<script type="text/javascript" src="http://code.jquery.com/jquery-1.10.1.min.js"></script>

then works fine.


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