I want to add row to the table on clicking Add button and delete row using Delete button using javascript/jquery. I have tried writing the following code:

<script src=/js/jquery-2.0.3.js></script>

  <script>

    /* Javascript for phone numbers*/

    $(document).ready(function()

    { 

      var counter = 2;

      var count= 4;



      $(#add_phone).click(function() 

      {

        alert(whoah it worked);

        if(counter>=count)

        {

          alert(Only  + count +  Phone number allowed.);

          return false;

        }   



        var htmlToAppend = '<tr id=pn'+ counter +'><th>

              <select class=phone_no>

                <option value=home>home</option>

                <option value=Business>Business</option>

                <option value=Business2>Business 2</option>

              </select>

            </th>

            <td><input type=text/></td></tr>';

            $(#phone_number).append ( htmlToAppend );



        newTableRow.appendTo(#phone_number);

        counter++;

      });



      $(#delete_phone).click(function() 

      {

        if(counter==2)

        {

          alert(Cannot remove phone number);

          return false;

        }   

        counter--;



        $(#pn + counter-1).remove();



      });

    });

But the alert message alert(whoah it worked); doesn't get displayed i.e its not entering the function.

<div class=info_type>

        Phone numbers  <hr>

        <table id=phone_number>

          <tr id=pn1>

            <th>

              <select class=phone_no>

                <option value=home>home</option>

                <option value=Business>Business</option>

                <option value=Business2>Business 2</option>

              </select>

            </th>

            <td><input type=text/></td>

          </tr>  

        </table>

        <input type=button id=add_phone value=Add/>

        <input type=button id=delete_phone value=Delete/>  

      </div>

I really want this solution. Can anybody help me??

PS: I am using Ruby on rails