Javascript WinJS不显示自动建议框

我对WinJS有问题。我不明白这个问题。我想用数据项填充（并且我这样做了）autosuggestbox。之后，通常它必须显示autosuggestbox。但是WinJS并没有列出这个列表

家庭控制器： 事件处理程序：

static stationRequest(event: CustomEvent) {
    var query = <string>event.detail.queryText;
    var suggestionCollection = event.detail.searchSuggestionCollection;
    var callback = function (response) {
        event.detail.setPromise(WinJS.Promise.then(null, function () {
            var _locations: Array<Object> = JSON.parse(response.responseText).LocationList.StopLocation;
            $("#response").text(JSON.stringify(_locations));
            _locations.forEach(function (obj: ILocation, index, _loc) {
                suggestionCollection.appendQuerySuggestion(obj.name);
            });

            event.detail.linguisticDetails.queryTextAlternatives.forEach(
                function (element, index, array) {
                    if (element.substr(0, query.length).toLocaleLowerCase() === query) {
                        suggestionCollection.appendQuerySuggestion(element);
                    }

                });
        }));
    };
    if (query.length > 3) {
        API.stationRequest(query, callback);
    }
}

静态站点请求（事件：CustomEvent）{
var query=event.detail.queryText；
var suggestionCollection=event.detail.searchSuggestionCollection；
var callback=函数（响应）{
event.detail.setPromise（WinJS.Promise.then）（null，函数（）{
var_locations:Array=JSON.parse（response.responseText）.LocationList.StopLocation；
$（“#响应”）.text（JSON.stringify（_位置））；
_位置。forEach（功能（对象：i位置、索引、位置）{
suggestionCollection.appendQuerySuggestion（对象名称）；
});
event.detail.languationDetails.QueryTextAlternations.forEach(
函数（元素、索引、数组）{
if（element.substr（0，query.length）.toLocaleLowerCase（）==query）{
suggestionCollection.appendQuerySuggestion（元素）；
}
});
}));
};
如果（query.length>3）{
API.stationRequest（查询、回调）；
}
}

我或多或少地从windows WinJS站点复制了这个示例，但是。。。它在

$（“#response”）

-元素中很好地显示了responsetext，但我没有得到任何框或列表

失败是什么

static stationRequest(event: CustomEvent) {
    var query = <string>event.detail.queryText;
    var suggestionCollection = event.detail.searchSuggestionCollection;
    var callback = function (response) {
        event.detail.setPromise(WinJS.Promise.then(null, function () {
            var _locations: Array<Object> = JSON.parse(response.responseText).LocationList.StopLocation;
            $("#response").text(JSON.stringify(_locations));
            _locations.forEach(function (obj: ILocation, index, _loc) {
                suggestionCollection.appendQuerySuggestion(obj.name);
            });

            event.detail.linguisticDetails.queryTextAlternatives.forEach(
                function (element, index, array) {
                    if (element.substr(0, query.length).toLocaleLowerCase() === query) {
                        suggestionCollection.appendQuerySuggestion(element);
                    }

                });
        }));
    };
    if (query.length > 3) {
        API.stationRequest(query, callback);
    }
}