http://blog.csdn.net/wangjingjing1014/article/details/16885341
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head>
<body>
<select class="easyui-combobox" ;
theOption.value = currentYear-i;
select.appendChild(theOption);
}
</script>
</html>
获取下拉菜单选中的值：var year = $('#cbYearContrast').combobox('getValue');