easyui下拉框代码块

下拉框设置
function inCombobox(id, url, valuefield,textfield) {
    $.ajaxSettings.async = false;
    $.ajax({
        type: "post",
        url: url,
        data: {},
        dataType: "json",
        success: function (data) {
            //var obj = JSON.parse(data);
            var value = "";
            //加载下拉框复选框
            $('#' + id).combobox({
                data: data.data.DT,
                method: 'post',
                panelHeight: 200,//设置为固定高度，combobox出现竖直滚动条
                valueField: valuefield,
                textField: textfield,
            });
        },
        error: function () {
            alert("系统异常，请稍后重试！");
        }
    });
    $.ajaxSettings.async = true;
}
$('#tano').combobox({
    onChange: function (newValue, oldValue) {
        SeachData_4043();
    }
});