我正在使用JQuery UI Autocomplete来快速搜索小部件。我有几个分组的项目，如酒店，城市，区域等。我可以渲染类别，但我无法链接它们。当我尝试时，ui自动完成插件会检测类似项目的类别。这不是问题，但是当我使用向上/向下箭头或使用鼠标来聚焦它们时，它会返回如下错误：
"TypeError: item is undefined. this.liveRegion.text( item.value );"
我该如何解决这个问题？我尝试使用JQuery UI Autocomplete的“焦点”事件和几种方法（例如“return false，e.stopPropagation或e.preventDefault”），但它不起作用
这是我的代码：
$.widget("custom.catcomplete", $.ui.autocomplete, {
_renderMenu: function (ul, items) {
var searchkey = "";
var itemtype = "";
var searchtype = "";
var self = this, currentCategory = "";
$.each(items, function (index, item) {
if (typeof item.kelime != 'undefined') { searchkey = item.kelime; }
if (item.category != currentCategory) {
if (item.category == "Bölge" || item.category == "Şehir") {
itemtype = "cat-bolgeler";
} else if (item.category == "Otel") {
itemtype = "cat-oteller";
searchtype = "otel";
} else if (item.category == "Yurt Dışı Tur") {
itemtype = "cat-ydtur";
searchtype = "yurtdisitur";
} else if (item.category == "Yurt İçi Tur") {
itemtype = "cat-yitur";
searchtype = "yurticitur";
} else if (item.category == "Cruise") {
itemtype = "cat-cruise";
searchtype = "cruise";
}
if (searchtype != "") {
ul.append("<li class='ui-autocomplete-category " + itemtype + "' id='" + item.searchid + "'><a href='/arama/" + searchkey + "?k=" + searchtype + "&q=" + searchkey + "'>" + item.category + "</a></li>");
} else {
ul.append("<li class='ui-autocomplete-category " + itemtype + "' id='" + item.searchid + "'>" + item.category + "</li>");
}
currentCategory = item.category;
}
self._renderItem(ul, item);
});
}
});
$(".hizliaratext").catcomplete({
source: function (request, response) {
$.ajax({
url: '/filename.aspx',
dataType: "json",
contentType: "application/json; charset=utf-8",
type: "get",
data: { kelime: request.term },
success: function (data) {
response($.map(data, function (item) {
return {
label: item.label,
searchid: item.searchid,
category: item.category,
link: item.link,
kelime: item.kelime
}
}));
}
});
},
minLength: 3,
appendTo: "#hizliara",
select: function (event, ui) {
window.location = ui.item.link;
},
focus: function (event, ui) {
}
}).data("catcomplete")._renderItem = function (ul, item) {
return $("<li>").data("item.autocomplete", item).append("<a>" + item.label + "</a>").appendTo(ul);
};
以下是“？kelime = anka ”的示例JSON响应：
[{"searchid":2001,"label":"Alba Ankara Hotel","category":"Otel","link":"/otel-detay/alba-ankara-hotel","kelime":"anka"},{"searchid":2238,"label":"Ankara Madi İnci Hotel","category":"Otel","link":"/otel-detay/ankara-madi-inci-hotel"},{"searchid":2244,"label":"Madi Hotel Ankara","category":"Otel","link":"/otel-detay/madi-hotel-ankara"},{"searchid":2403,"label":"City Hotel Ankara","category":"Otel","link":"/otel-detay/city-hotel-ankara"},{"searchid":2404,"label":"Doğa Residence Ankara","category":"Otel","link":"/otel-detay/doga-residence-ankara"},{"searchid":6779,"label":"Ankara","category":"Şehir","link":"/ustaramaliste.aspx?y=6779"},{"searchid":6785,"label":"Ankara / Çankaya","category":"Bölge","link":"/ustaramaliste.aspx?y=6785"},{"searchid":14601,"label":"İzmir / Çankaya","category":"Bölge","link":"/ustaramaliste.aspx?y=14601"}]
答案 0 :(得分：3)
声音（并且看起来）就像你想要类别项目的select / focus事件一样（如果不是这样的情况我会＆＃39; ll更新我的回答）。
自动完成小部件在内部期望列表项具有与其关联的item.autocomplete数据。为了解决错误，您可以创建＆＃34;类别＆＃34;具有适当数据的项目。这将使您能够对select事件作出反应，并消除focus事件发生的错误：
更新了小部件代码：
$.widget("custom.catcomplete", $.ui.autocomplete, {
_renderMenu: function(ul, items) {
var searchkey = "";
var itemtype = "";
var searchtype = "";
var self = this,
currentCategory = "";
$.each(items, function(index, item) {
if (typeof item.kelime != 'undefined') {
searchkey = item.kelime;
}
if (item.category != currentCategory) {
if (item.category == "Bölge" || item.category == "Şehir") {
itemtype = "cat-bolgeler";
} else if (item.category == "Otel") {
itemtype = "cat-oteller";
searchtype = "otel";
} else if (item.category == "Yurt Dışı Tur") {
itemtype = "cat-ydtur";
searchtype = "yurtdisitur";
} else if (item.category == "Yurt İçi Tur") {
itemtype = "cat-yitur";
searchtype = "yurticitur";
} else if (item.category == "Cruise") {
itemtype = "cat-cruise";
searchtype = "cruise";
}
if (searchtype != "") {
ul.append($("<li class='ui-autocomplete-category " + itemtype + "' id='" + item.searchid + "'><a href='/arama/" + searchkey + "?k=" + searchtype + "&q=" + searchkey + "'>" + item.category + "</a></li>").data("item.autocomplete", {}));
} else {
ul.append($("<li class='ui-autocomplete-category " + itemtype + "' id='" + item.searchid + "'>" + item.category + "</li>").data("item.autocomplete", {}));
}
currentCategory = item.category;
}
self._renderItem(ul, item);
});
}
});
答案 1 :(得分：1)
对于jquery-ui-1.10 +，数据标记名称已更改为“ui-autocomplete-item”，如下所示：
(('a -> 'b) * 'a list) -> 'b list