layui 單選框選中事件

<div class="layui-form-item" pane="">
    <label class="layui-form-label">節點</label>
    <div class="layui-input-block">
        <input type="radio" name="sex" value="左節點" title="左節點" lay-filter="jiedian" >
        <input type="hidden" name="leftjiedian" id="zjidian">
        <input type="radio" name="sex" value="右節點" title="右節點" lay-filter="jiedian">
        <input  type="hidden" name="rightjiedian" id="rjidian">
    </div>
</div>

form.on('radio(jiedian)', function (data) {
    //alert(data.elem);
    //console.log(data.elem);
    alert(data.value);//判斷單選框的選中值
    var abc=data.value;
    if(abc=="左節點"){
       $("#zjidian").val("1");
        $("#rjidian").val("");
      // alert($("#zjidian").val());
    }else{
        $("#rjidian").val("1");
        $("#zjidian").val("");
      //  alert($("#rjidian").val());
    }

     //console.log(data.value);
     //alert(data.othis);
    //layer.tips('開關checked：' + (this.checked ? 'true' : 'false'), data.othis);
    //layer.alert('響應點擊事件');
});