[jQuery] Re: Filter doubles from selection

[Wizzud]

Why clone()? Why not just move them from one to the other?

(ids changed for simpler coding...)
<select id="left" multiple="multiple">
<option value="1">test 1</option>
<option value="2">test 2</option>
<option value="3">test 3</option>
</select>
<button id="left_right">&gt;&gt;</button>
<button id="right_left">&lt;&lt;</button>
<select id="right" multiple="multiple">
</select>

    $('button').each(function(){
        var lr = this.id.split('_');
        $(this).click(function(){
            $('#' + lr[0] + ' option:selected').appendTo('#' + lr[1]);
          });
      });


On Oct 23, 6:16 pm, Korijn <[EMAIL PROTECTED]> wrote:
> The problem I have is (I think) quite simple but I find myself unable
> to find a solution to it.
> In the system I made you can select options from a select box and then
> click a button to add them to a different select box with your
> selected options. There's also a button to remove items from your
> selection. This works fine and you can see it below.
>
> What I need is something added to the first selector that will make
> sure of the following:
> If an option has already been added to #selection it should not be
> added again! But how can I accomplish that?
> Thanks in advance!
>
> Here's the (stripped) situation:
>
> <script type="text/javascript">
> //<![CDATA[
> $(document).ready(function() {
>         $("#right").click(function() {
>                 $("#options option:selected").clone().appendTo("#selection");
>                 return(false);
>         });
>         $("#left").click(function() {
>                 $("#selection option:selected").remove();
>                 return(false);
>         });});
>
> //]]>
> </script>
>
> <select id="options" multiple="multiple">
> <option value="1">test 1</option>
> <option value="2">test 2</option>
> <option value="3">test 3</option>
> </select>
>
> <button id="right">&gt;&gt;</button>
> <button id="left">&lt;&lt;</button>
>
> <select id="selection" multiple="multiple">
> </select>