JQuery MultiSelect（左右选择框）

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

  <head>

    <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />

    <title>demo</title>

    <script src="jquery-1.4.4.min.js"></script>

    <script>

    $(function(){

        //选择一项

        $("#addOne").click(function(){

            $("#from option:selected").clone().appendTo("#to");

            $("#from option:selected").remove();

        });

        //选择全部

        $("#addAll").click(function(){

            $("#from option").clone().appendTo("#to");

            $("#from option").remove();

        });

        //移除一项

        $("#removeOne").click(function(){

            $("#to option:selected").clone().appendTo("#from");

            $("#to option:selected").remove();

        });

        //移除全部

        $("#removeAll").click(function(){

            $("#to option").clone().appendTo("#from");

            $("#to option").remove();

        });

        //移至顶部

        $("#Top").click(function(){

            var allOpts = $("#to option");

            var selected = $("#to option:selected");

            if(selected.get(0).index!=0){

                for(i=0;i<selected.length;i++){

                   var item = $(selected.get(i));

                   var top = $(allOpts.get(0));

                   item.insertBefore(top);

                }

            }

        });

        //上移一行

        $("#Up").click(function(){

            var selected = $("#to option:selected");

            if(selected.get(0).index!=0){

                selected.each(function(){

                    $(this).prev().before($(this));

                });

            }

        });

        //下移一行

        $("#Down").click(function(){

            var allOpts = $("#to option");

            var selected = $("#to option:selected");

            if(selected.get(selected.length-1).index!=allOpts.length-1){

                for(i=selected.length-1;i>=0;i--){

                   var item = $(selected.get(i));

                   item.insertAfter(item.next());

                }

            }

        });

        //移至底部

        $("#Buttom").click(function(){

            var allOpts = $("#to option");

            var selected = $("#to option:selected");

            if(selected.get(selected.length-1).index!=allOpts.length-1){

                for(i=selected.length-1;i>=0;i--){

                   var item = $(selected.get(i));

                   var buttom = $(allOpts.get(length-1));

                   item.insertAfter(buttom);

                }

            }

        });

    });

    </script>

  </head>

<body>

<table align="center" width="288" border="0" cellpadding="0" cellspacing="0">

    <tr>

        <td colspan="4">

            <select name="from" id="from" multiple="multiple" size="10" style="width:100%">

                <option value="1">选项1</option>

                <option value="2">选项2</option>

                <option value="3">选项3</option>

                <option value="4">选项4</option>

                <option value="5">选项5</option>

                <option value="6">选项6</option>

                <option value="7">选项7</option>

            </select>

        </td>

        <td align="center">

            <input type="button" id="addAll" value=" >> " style="width:50px;" /><br />

            <input type="button" id="addOne" value=" > " style="width:50px;" /><br />

            <input type="button" id="removeOne" value="&lt;" style="width:50px;" /><br />

            <input type="button" id="removeAll" value="&lt;&lt;" style="width:50px;" /><br />

        </td>

        <td colspan="4">

            <select name="to" id="to" multiple="multiple" size="10" style="width:100%">

            </select>

        </td>

        <td align="center">

            <input type="button" id="Top" value="置顶" style="width:50px;" /><br />

            <input type="button" id="Up" value="上移" style="width:50px;" /><br />

            <input type="button" id="Down" value="下移" style="width:50px;" /><br />

            <input type="button" id="Buttom" value="置底" style="width:50px;" /><br />

        </td>

    </tr>

</table>

</body>

</html>
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JQuery MultiSelect（左右选择框）

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