jquery 实现两Select 标签项互调示例代码

<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<script type="text/javascript" src="http://code.jquery.com/jquery-1.4.1.min.js"></script>
</head>

<SCRIPT LANGUAGE="JavaScript">
<!--
$(document).ready(function() {
$("#toRight").click(function(){
$("#selectLeft option:selected").each(function(){
$("#selectRight").append("<option value=" + $(this).val() + ">" + $(this).html() + "</option>");
$(this).remove();
});
});

$("#toLeft").click(function(){
$("#selectRight option:selected").each(function(){
$("#selectLeft").append("<option value=" + $(this).val() + ">" + $(this).html() + "</option>");//这个方法是默认在后面添加
//$("#selectLeft option:first").before("<option value=" + $(this).val() + ">" + $(this).html() + "</option>"); //此种方法是在select前面加内容
//$("#selectLeft option[value=3]").before("<option value=" + $(this).val() + ">" + $(this).html() + "</option>"); //此种方法是在selectt指定某一行加内容
$(this).remove();
});
});

});
//-->
</SCRIPT>

<BODY>
<table>
<tr>
<td>
<select size='10' multiple id="selectLeft" style="width:200px">
<option value="0">Jquery API</option>
<option value="1">JavaScript高级程序设计</option>
<option value="2">锋利的jQuery</option>
<option value="3">JavaScript 设计模式</option>
<option value="4">JavaScript+DOM高级程序设计</option>
<option value="5">PHP高级程序设计</option>
<option value="6">面向对象程序设计</option>
</select>
</td>
<td>
<input type="button" value=" >> " id="toRight" /><br /><br />
<input type="button" value=" << " id="toLeft" />
</td>
<td>
<select size='10' multiple id="selectRight" style="width:200px">
</select>
</td>
</tr>
</table>
</BODY>
</HTML>