Javascript 如何使用jQuery为Flexdatalist设置默认值

我使用Flexdatalist提供自动完成功能。 我的脚本如下所示：

$('#locationKeyword').flexdatalist({
        url: 'serverAction',
        cache: false,
        searchIn: ["ProvinceName", "CityName", "TownName"],
        visibleProperties: ["ProvinceName", "CityName", "TownName"],
        groupBy: 'ProvinceName',
        value:'1,1,1',
        selectionRequired: false,
        focusFirstResult: true,
        minLength: 1,
        maxShownResults: 20,
        valueProperty: '{Value}',
        textProperty: '{ProvinceName}, {CityName}, {TownName}',
        searchContain: true
    });

return Json(new
        {
            ProvinceName = item.Province.Name,
            CityName = item.City.Name,
            TownName = item.Town.Name,
            Value = item.ProvinceId + "," + item.CityId + "," + item.TownId
        });

服务器端代码（Asp.NET MVC）返回如下对象数组：

$('#locationKeyword').flexdatalist({
        url: 'serverAction',
        cache: false,
        searchIn: ["ProvinceName", "CityName", "TownName"],
        visibleProperties: ["ProvinceName", "CityName", "TownName"],
        groupBy: 'ProvinceName',
        value:'1,1,1',
        selectionRequired: false,
        focusFirstResult: true,
        minLength: 1,
        maxShownResults: 20,
        valueProperty: '{Value}',
        textProperty: '{ProvinceName}, {CityName}, {TownName}',
        searchContain: true
    });

return Json(new
        {
            ProvinceName = item.Province.Name,
            CityName = item.City.Name,
            TownName = item.Town.Name,
            Value = item.ProvinceId + "," + item.CityId + "," + item.TownId
        });

所有item.ProvinceId、item.CityId、item.TownId均为int

问题是： 如何为其设置默认值。例如，我想选择一个省、市、镇的组合。

谢谢大家

我发现解决方案如下：

Html:

---

我还试图从url中预填充多个值，但您提供的解决方案似乎不起作用。文档显示了示例，但前提是数据来自json文件。你能建议我怎么做吗。