<div class="pageButton" style="height: 60px;margin: 10px;line-height: 30px;">

                          <form id="pageform" action="${basePath}/back/userChannel/list.action" method="post">

                              <input type="hidden" id="currentPage" name="currentPage"/>

                            登录名：<input type="text" name="userChannel.loginName" value="${userChannel.loginName}"/>&nbsp;

                            通道类型：<select name="userChannel.type" id="type">

                            <option value="">全部</option>

                            <option value="">京东钱包</option>

                            <option value="">QQ</option>

                            <option value="">微信</option>

                            <option value="">支付宝</option>

                            <option value="">H5</option>

                            <option value="">银联二维码</option>

                            <option value="">快捷支付</option>

                            <option value="">代付</option>

                        </select>&nbsp;

                            通道：<select name="userChannel.channelId" id="channelId">

                                    <option value="">全部</option>

                                    <s:iterator value="tchannelList">

                                        <option value="${code}" <s:if test="userChannel.channelId == code">selected="selected"</s:if>>${name}</option>

                                    </s:iterator>

                                </select>&nbsp;

//异步请求经数据写入下拉选中

$(function(){

    //二级联动异步请求将数据写入下拉选

    $("#type").change(function(){

        var obj = $("#type option:selected");

        var  payType  = obj.val();

        alert(payType);

        var channelId=$("#channelId");

//=============

        $.ajax({

            type:'post',

            url:'queryTchannelList.action',

            data:'userIds='+payType,

            dataType:'text',

            success:function(msg){

                $("#channelId").empty();

                var jsons =JSON.parse(msg);//需要将返回json字符串转换成json对象以后遍历

                for(var i = ; i < jsons.length; i++) {

                    alert(jsons[i].name);

                    channelId.append('<option value="'+jsons[i].id+'">'+jsons[i].name+'</option>');

                }

            },

            error:function(){

                alert("获取通道列表失败！！！！！");

                //alert("操作出错，请与管理员联系！");

            }

        });

    });

});